/**
 * Twenty Fifteen functions and definitions
 *
 * Set up the theme and provides some helper functions, which are used in the
 * theme as custom template tags. Others are attached to action and filter
 * hooks in WordPress to change core functionality.
 *
 * When using a child theme you can override certain functions (those wrapped
 * in a function_exists() call) by defining them first in your child theme's
 * functions.php file. The child theme's functions.php file is included before
 * the parent theme's file, so the child theme functions would be used.
 *
 * @link https://codex.wordpress.org/Theme_Development
 * @link https://developer.wordpress.org/themes/advanced-topics/child-themes/
 *
 * Functions that are not pluggable (not wrapped in function_exists()) are
 * instead attached to a filter or action hook.
 *
 * For more information on hooks, actions, and filters,
 * {@link https://codex.wordpress.org/Plugin_API}
 *
 * @package WordPress
 * @subpackage Twenty_Fifteen
 * @since Twenty Fifteen 1.0
 */

/**
 * Set the content width based on the theme's design and stylesheet.
 *
 * @since Twenty Fifteen 1.0
 */
if ( ! isset( $content_width ) ) {
	$content_width = 660;
}

/**
 * Twenty Fifteen only works in WordPress 4.1 or later.
 */
if ( version_compare( $GLOBALS['wp_version'], '4.1-alpha', '<' ) ) {
	require get_template_directory() . '/inc/back-compat.php';
}

if ( ! function_exists( 'twentyfifteen_setup' ) ) :
	/**
	 * Sets up theme defaults and registers support for various WordPress features.
	 *
	 * Note that this function is hooked into the after_setup_theme hook, which
	 * runs before the init hook. The init hook is too late for some features, such
	 * as indicating support for post thumbnails.
	 *
	 * @since Twenty Fifteen 1.0
	 */
	function twentyfifteen_setup() {

		/*
		 * Make theme available for translation.
		 * Translations can be filed at WordPress.org. See: https://translate.wordpress.org/projects/wp-themes/twentyfifteen
		 * If you're building a theme based on twentyfifteen, use a find and replace
		 * to change 'twentyfifteen' to the name of your theme in all the template files
		 */
		load_theme_textdomain( 'twentyfifteen' );

		// Add default posts and comments RSS feed links to head.
		add_theme_support( 'automatic-feed-links' );

		/*
		 * Let WordPress manage the document title.
		 * By adding theme support, we declare that this theme does not use a
		 * hard-coded <title> tag in the document head, and expect WordPress to
		 * provide it for us.
		 */
		add_theme_support( 'title-tag' );

		/*
		 * Enable support for Post Thumbnails on posts and pages.
		 *
		 * See: https://developer.wordpress.org/reference/functions/add_theme_support/#post-thumbnails
		 */
		add_theme_support( 'post-thumbnails' );
		set_post_thumbnail_size( 825, 510, true );

		// This theme uses wp_nav_menu() in two locations.
		register_nav_menus(
			array(
				'primary' => __( 'Primary Menu', 'twentyfifteen' ),
				'social'  => __( 'Social Links Menu', 'twentyfifteen' ),
			)
		);

		/*
		 * Switch default core markup for search form, comment form, and comments
		 * to output valid HTML5.
		 */
		add_theme_support(
			'html5',
			array(
				'search-form',
				'comment-form',
				'comment-list',
				'gallery',
				'caption',
			)
		);

		/*
		 * Enable support for Post Formats.
		 *
		 * See: https://codex.wordpress.org/Post_Formats
		 */
		add_theme_support(
			'post-formats',
			array(
				'aside',
				'image',
				'video',
				'quote',
				'link',
				'gallery',
				'status',
				'audio',
				'chat',
			)
		);

		/*
		 * Enable support for custom logo.
		 *
		 * @since Twenty Fifteen 1.5
		 */
		add_theme_support(
			'custom-logo',
			array(
				'height'      => 248,
				'width'       => 248,
				'flex-height' => true,
			)
		);

		$color_scheme  = twentyfifteen_get_color_scheme();
		$default_color = trim( $color_scheme[0], '#' );

		// Setup the WordPress core custom background feature.

		/**
		 * Filter Twenty Fifteen custom-header support arguments.
		 *
		 * @since Twenty Fifteen 1.0
		 *
		 * @param array $args {
		 *     An array of custom-header support arguments.
		 *
		 *     @type string $default-color          Default color of the header.
		 *     @type string $default-attachment     Default attachment of the header.
		 * }
		 */
		add_theme_support(
			'custom-background',
			apply_filters(
				'twentyfifteen_custom_background_args',
				array(
					'default-color'      => $default_color,
					'default-attachment' => 'fixed',
				)
			)
		);

		/*
		 * This theme styles the visual editor to resemble the theme style,
		 * specifically font, colors, icons, and column width.
		 */
		add_editor_style( array( 'css/editor-style.css', 'genericons/genericons.css', twentyfifteen_fonts_url() ) );

		// Load regular editor styles into the new block-based editor.
		add_theme_support( 'editor-styles' );

		// Load default block styles.
		add_theme_support( 'wp-block-styles' );

		// Add support for responsive embeds.
		add_theme_support( 'responsive-embeds' );

		// Add support for custom color scheme.
		add_theme_support(
			'editor-color-palette',
			array(
				array(
					'name'  => __( 'Dark Gray', 'twentyfifteen' ),
					'slug'  => 'dark-gray',
					'color' => '#111',
				),
				array(
					'name'  => __( 'Light Gray', 'twentyfifteen' ),
					'slug'  => 'light-gray',
					'color' => '#f1f1f1',
				),
				array(
					'name'  => __( 'White', 'twentyfifteen' ),
					'slug'  => 'white',
					'color' => '#fff',
				),
				array(
					'name'  => __( 'Yellow', 'twentyfifteen' ),
					'slug'  => 'yellow',
					'color' => '#f4ca16',
				),
				array(
					'name'  => __( 'Dark Brown', 'twentyfifteen' ),
					'slug'  => 'dark-brown',
					'color' => '#352712',
				),
				array(
					'name'  => __( 'Medium Pink', 'twentyfifteen' ),
					'slug'  => 'medium-pink',
					'color' => '#e53b51',
				),
				array(
					'name'  => __( 'Light Pink', 'twentyfifteen' ),
					'slug'  => 'light-pink',
					'color' => '#ffe5d1',
				),
				array(
					'name'  => __( 'Dark Purple', 'twentyfifteen' ),
					'slug'  => 'dark-purple',
					'color' => '#2e2256',
				),
				array(
					'name'  => __( 'Purple', 'twentyfifteen' ),
					'slug'  => 'purple',
					'color' => '#674970',
				),
				array(
					'name'  => __( 'Blue Gray', 'twentyfifteen' ),
					'slug'  => 'blue-gray',
					'color' => '#22313f',
				),
				array(
					'name'  => __( 'Bright Blue', 'twentyfifteen' ),
					'slug'  => 'bright-blue',
					'color' => '#55c3dc',
				),
				array(
					'name'  => __( 'Light Blue', 'twentyfifteen' ),
					'slug'  => 'light-blue',
					'color' => '#e9f2f9',
				),
			)
		);

		// Indicate widget sidebars can use selective refresh in the Customizer.
		add_theme_support( 'customize-selective-refresh-widgets' );
	}
endif; // twentyfifteen_setup
add_action( 'after_setup_theme', 'twentyfifteen_setup' );

/**
 * Register widget area.
 *
 * @since Twenty Fifteen 1.0
 *
 * @link https://codex.wordpress.org/Function_Reference/register_sidebar
 */
function twentyfifteen_widgets_init() {
	register_sidebar(
		array(
			'name'          => __( 'Widget Area', 'twentyfifteen' ),
			'id'            => 'sidebar-1',
			'description'   => __( 'Add widgets here to appear in your sidebar.', 'twentyfifteen' ),
			'before_widget' => '<aside id="%1$s" class="widget %2$s">',
			'after_widget'  => '</aside>',
			'before_title'  => '<h2 class="widget-title">',
			'after_title'   => '</h2>',
		)
	);
}
add_action( 'widgets_init', 'twentyfifteen_widgets_init' );

if ( ! function_exists( 'twentyfifteen_fonts_url' ) ) :
	/**
	 * Register Google fonts for Twenty Fifteen.
	 *
	 * @since Twenty Fifteen 1.0
	 *
	 * @return string Google fonts URL for the theme.
	 */
	function twentyfifteen_fonts_url() {
		$fonts_url = '';
		$fonts     = array();
		$subsets   = 'latin,latin-ext';

		/*
		 * Translators: If there are characters in your language that are not supported
		 * by Noto Sans, translate this to 'off'. Do not translate into your own language.
		 */
		if ( 'off' !== _x( 'on', 'Noto Sans font: on or off', 'twentyfifteen' ) ) {
			$fonts[] = 'Noto Sans:400italic,700italic,400,700';
		}

		/*
		 * Translators: If there are characters in your language that are not supported
		 * by Noto Serif, translate this to 'off'. Do not translate into your own language.
		 */
		if ( 'off' !== _x( 'on', 'Noto Serif font: on or off', 'twentyfifteen' ) ) {
			$fonts[] = 'Noto Serif:400italic,700italic,400,700';
		}

		/*
		 * Translators: If there are characters in your language that are not supported
		 * by Inconsolata, translate this to 'off'. Do not translate into your own language.
		 */
		if ( 'off' !== _x( 'on', 'Inconsolata font: on or off', 'twentyfifteen' ) ) {
			$fonts[] = 'Inconsolata:400,700';
		}

		/*
		 * Translators: To add an additional character subset specific to your language,
		 * translate this to 'greek', 'cyrillic', 'devanagari' or 'vietnamese'. Do not translate into your own language.
		 */
		$subset = _x( 'no-subset', 'Add new subset (greek, cyrillic, devanagari, vietnamese)', 'twentyfifteen' );

		if ( 'cyrillic' == $subset ) {
			$subsets .= ',cyrillic,cyrillic-ext';
		} elseif ( 'greek' == $subset ) {
			$subsets .= ',greek,greek-ext';
		} elseif ( 'devanagari' == $subset ) {
			$subsets .= ',devanagari';
		} elseif ( 'vietnamese' == $subset ) {
			$subsets .= ',vietnamese';
		}

		if ( $fonts ) {
			$fonts_url = add_query_arg(
				array(
					'family' => urlencode( implode( '|', $fonts ) ),
					'subset' => urlencode( $subsets ),
				),
				'https://fonts.googleapis.com/css'
			);
		}

		return $fonts_url;
	}
endif;

/**
 * JavaScript Detection.
 *
 * Adds a `js` class to the root `<html>` element when JavaScript is detected.
 *
 * @since Twenty Fifteen 1.1
 */
function twentyfifteen_javascript_detection() {
	echo "<script>(function(html){html.className = html.className.replace(/\bno-js\b/,'js')})(document.documentElement);</script>\n";
}
add_action( 'wp_head', 'twentyfifteen_javascript_detection', 0 );

/**
 * Enqueue scripts and styles.
 *
 * @since Twenty Fifteen 1.0
 */
function twentyfifteen_scripts() {
	// Add custom fonts, used in the main stylesheet.
	wp_enqueue_style( 'twentyfifteen-fonts', twentyfifteen_fonts_url(), array(), null );

	// Add Genericons, used in the main stylesheet.
	wp_enqueue_style( 'genericons', get_template_directory_uri() . '/genericons/genericons.css', array(), '3.2' );

	// Load our main stylesheet.
	wp_enqueue_style( 'twentyfifteen-style', get_stylesheet_uri() );

	// Theme block stylesheet.
	wp_enqueue_style( 'twentyfifteen-block-style', get_template_directory_uri() . '/css/blocks.css', array( 'twentyfifteen-style' ), '20181230' );

	// Load the Internet Explorer specific stylesheet.
	wp_enqueue_style( 'twentyfifteen-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentyfifteen-style' ), '20141010' );
	wp_style_add_data( 'twentyfifteen-ie', 'conditional', 'lt IE 9' );

	// Load the Internet Explorer 7 specific stylesheet.
	wp_enqueue_style( 'twentyfifteen-ie7', get_template_directory_uri() . '/css/ie7.css', array( 'twentyfifteen-style' ), '20141010' );
	wp_style_add_data( 'twentyfifteen-ie7', 'conditional', 'lt IE 8' );

	wp_enqueue_script( 'twentyfifteen-skip-link-focus-fix', get_template_directory_uri() . '/js/skip-link-focus-fix.js', array(), '20141010', true );

	if ( is_singular() && comments_open() && get_option( 'thread_comments' ) ) {
		wp_enqueue_script( 'comment-reply' );
	}

	if ( is_singular() && wp_attachment_is_image() ) {
		wp_enqueue_script( 'twentyfifteen-keyboard-image-navigation', get_template_directory_uri() . '/js/keyboard-image-navigation.js', array( 'jquery' ), '20141010' );
	}

	wp_enqueue_script( 'twentyfifteen-script', get_template_directory_uri() . '/js/functions.js', array( 'jquery' ), '20150330', true );
	wp_localize_script(
		'twentyfifteen-script',
		'screenReaderText',
		array(
			'expand'   => '<span class="screen-reader-text">' . __( 'expand child menu', 'twentyfifteen' ) . '</span>',
			'collapse' => '<span class="screen-reader-text">' . __( 'collapse child menu', 'twentyfifteen' ) . '</span>',
		)
	);
}
add_action( 'wp_enqueue_scripts', 'twentyfifteen_scripts' );

/**
 * Enqueue styles for the block-based editor.
 *
 * @since Twenty Fifteen 2.1
 */
function twentyfifteen_block_editor_styles() {
	// Block styles.
	wp_enqueue_style( 'twentyfifteen-block-editor-style', get_template_directory_uri() . '/css/editor-blocks.css', array(), '20181230' );
	// Add custom fonts.
	wp_enqueue_style( 'twentyfifteen-fonts', twentyfifteen_fonts_url(), array(), null );
}
add_action( 'enqueue_block_editor_assets', 'twentyfifteen_block_editor_styles' );


/**
 * Add preconnect for Google Fonts.
 *
 * @since Twenty Fifteen 1.7
 *
 * @param array   $urls          URLs to print for resource hints.
 * @param string  $relation_type The relation type the URLs are printed.
 * @return array URLs to print for resource hints.
 */
function twentyfifteen_resource_hints( $urls, $relation_type ) {
	if ( wp_style_is( 'twentyfifteen-fonts', 'queue' ) && 'preconnect' === $relation_type ) {
		if ( version_compare( $GLOBALS['wp_version'], '4.7-alpha', '>=' ) ) {
			$urls[] = array(
				'href' => 'https://fonts.gstatic.com',
				'crossorigin',
			);
		} else {
			$urls[] = 'https://fonts.gstatic.com';
		}
	}

	return $urls;
}
add_filter( 'wp_resource_hints', 'twentyfifteen_resource_hints', 10, 2 );

/**
 * Add featured image as background image to post navigation elements.
 *
 * @since Twenty Fifteen 1.0
 *
 * @see wp_add_inline_style()
 */
function twentyfifteen_post_nav_background() {
	if ( ! is_single() ) {
		return;
	}

	$previous = ( is_attachment() ) ? get_post( get_post()->post_parent ) : get_adjacent_post( false, '', true );
	$next     = get_adjacent_post( false, '', false );
	$css      = '';

	if ( is_attachment() && 'attachment' == $previous->post_type ) {
		return;
	}

	if ( $previous && has_post_thumbnail( $previous->ID ) ) {
		$prevthumb = wp_get_attachment_image_src( get_post_thumbnail_id( $previous->ID ), 'post-thumbnail' );
		$css      .= '
			.post-navigation .nav-previous { background-image: url(' . esc_url( $prevthumb[0] ) . '); }
			.post-navigation .nav-previous .post-title, .post-navigation .nav-previous a:hover .post-title, .post-navigation .nav-previous .meta-nav { color: #fff; }
			.post-navigation .nav-previous a:before { background-color: rgba(0, 0, 0, 0.4); }
		';
	}

	if ( $next && has_post_thumbnail( $next->ID ) ) {
		$nextthumb = wp_get_attachment_image_src( get_post_thumbnail_id( $next->ID ), 'post-thumbnail' );
		$css      .= '
			.post-navigation .nav-next { background-image: url(' . esc_url( $nextthumb[0] ) . '); border-top: 0; }
			.post-navigation .nav-next .post-title, .post-navigation .nav-next a:hover .post-title, .post-navigation .nav-next .meta-nav { color: #fff; }
			.post-navigation .nav-next a:before { background-color: rgba(0, 0, 0, 0.4); }
		';
	}

	wp_add_inline_style( 'twentyfifteen-style', $css );
}
add_action( 'wp_enqueue_scripts', 'twentyfifteen_post_nav_background' );

/**
 * Display descriptions in main navigation.
 *
 * @since Twenty Fifteen 1.0
 *
 * @param string  $item_output The menu item output.
 * @param WP_Post $item        Menu item object.
 * @param int     $depth       Depth of the menu.
 * @param array   $args        wp_nav_menu() arguments.
 * @return string Menu item with possible description.
 */
function twentyfifteen_nav_description( $item_output, $item, $depth, $args ) {
	if ( 'primary' == $args->theme_location && $item->description ) {
		$item_output = str_replace( $args->link_after . '</a>', '<div class="menu-item-description">' . $item->description . '</div>' . $args->link_after . '</a>', $item_output );
	}

	return $item_output;
}
add_filter( 'walker_nav_menu_start_el', 'twentyfifteen_nav_description', 10, 4 );

/**
 * Add a `screen-reader-text` class to the search form's submit button.
 *
 * @since Twenty Fifteen 1.0
 *
 * @param string $html Search form HTML.
 * @return string Modified search form HTML.
 */
function twentyfifteen_search_form_modify( $html ) {
	return str_replace( 'class="search-submit"', 'class="search-submit screen-reader-text"', $html );
}
add_filter( 'get_search_form', 'twentyfifteen_search_form_modify' );

/**
 * Modifies tag cloud widget arguments to display all tags in the same font size
 * and use list format for better accessibility.
 *
 * @since Twenty Fifteen 1.9
 *
 * @param array $args Arguments for tag cloud widget.
 * @return array The filtered arguments for tag cloud widget.
 */
function twentyfifteen_widget_tag_cloud_args( $args ) {
	$args['largest']  = 22;
	$args['smallest'] = 8;
	$args['unit']     = 'pt';
	$args['format']   = 'list';

	return $args;
}
add_filter( 'widget_tag_cloud_args', 'twentyfifteen_widget_tag_cloud_args' );


/**
 * Implement the Custom Header feature.
 *
 * @since Twenty Fifteen 1.0
 */
require get_template_directory() . '/inc/custom-header.php';

/**
 * Custom template tags for this theme.
 *
 * @since Twenty Fifteen 1.0
 */
require get_template_directory() . '/inc/template-tags.php';

/**
 * Customizer additions.
 *
 * @since Twenty Fifteen 1.0
 */
require get_template_directory() . '/inc/customizer.php';
<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:wfw="http://wellformedweb.org/CommentAPI/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
	xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
	>

<channel>
	<title>Fuck Buddy Finder &#8211; Polagora</title>
	<atom:link href="http://www.polagora.ma/index.php/category/fuck-buddy-finder/feed/" rel="self" type="application/rss+xml" />
	<link>http://www.polagora.ma</link>
	<description>Un site utilisant WordPress</description>
	<lastBuildDate>Tue, 14 Apr 2026 20:35:01 +0000</lastBuildDate>
	<language>fr-FR</language>
	<sy:updatePeriod>hourly</sy:updatePeriod>
	<sy:updateFrequency>1</sy:updateFrequency>
	<generator>https://wordpress.org/?v=4.9.26</generator>
	<item>
		<title>The phases of Development of the Fetus</title>
		<link>http://www.polagora.ma/index.php/2019/11/01/the-phases-of-development-of-the-fetus-18/</link>
		<comments>http://www.polagora.ma/index.php/2019/11/01/the-phases-of-development-of-the-fetus-18/#respond</comments>
		<pubDate>Fri, 01 Nov 2019 00:40:08 +0000</pubDate>
		<dc:creator><![CDATA[polagora]]></dc:creator>
				<category><![CDATA[Fuck Buddy Finder]]></category>

		<guid isPermaLink="false">http://www.polagora.ma/?p=6016</guid>
		<description><![CDATA[The phases of Development of the Fetus , MD, Saint Louis University School of Medicine Once per month, an egg is released from an ovary as a fallopian pipe. After sexual activity, sperm move through the vagina through the cervix and womb to your fallopian tubes, where one semen fertilizes the egg. The fertilized egg [&#8230;]]]></description>
				<content:encoded><![CDATA[<p><title>The phases of Development of the Fetus</title> </p>
<p>, MD, Saint Louis University School of Medicine</p>
<p>Once per month, an egg is released from an ovary as  a fallopian pipe. After sexual activity, sperm move through the vagina through the cervix and womb to your fallopian tubes, where one semen fertilizes the egg. The fertilized egg (zygote) divides over and over over and over over and over repeatedly because it moves along  the fallopian tube to the womb. First, the zygote turns into  a ball that is solid of. Then it becomes  a ball that is hollow of known as  a blastocyst.</p>
<p>The blastocyst implants in the wall of the uterus, where it develops into an embryo attached to a placenta and surrounded by fluid-filled membranes inside the uterus.</p>
<p>At 2 months of being pregnant, the placenta and fetus have now been developing for 6 days. The placenta types tiny hairlike projections (villi) that increase in to the wall surface of this womb. Bloodstream through the embryo, which move across the cord that is umbilical the placenta, develop into the villi.</p>
<p>A slim membrane layer separates the embryo&rsquo;s bloodstream when you look at the villi through the mom&rsquo;s blood that flows through the room surrounding the villi (intervillous room).<span id="more-6016"></span> The following is done by this arrangement:</p>
<p>Allows materials to be exchanged involving the bloodstream for the mother and that for the embryo</p>
<p>Stops the caretaker&rsquo;s disease fighting capability from attacking the embryo as the mom&rsquo;s antibodies are way too big to feed the membrane layer (antibodies are proteins made by the defense mechanisms to assist protect your body against international substances)</p>
<p>The embryo floats in fluid (amniotic fluid), that will be found in a sac (amniotic sac).</p>
<p>The amniotic fluid does the annotated following:</p>
<p>Provides an area where the embryo can develop easily</p>
<p>Helps protect the embryo from damage</p>
<p>The amniotic sac is strong and resilient.</p>
<p>An infant passes through a few stages of development, starting being  an egg that is fertilized. The egg develops in to  a blastocyst, an embryo, then the fetus.</p>
<h2>Fertilization</h2>
<p>During each normal period, one egg (ovum) is generally released from 1 associated with the ovaries, about week or two following the final menstrual period. Launch of the egg is named ovulation. The egg is swept to the funnel-shaped end of just one of the fallopian pipes.</p>
<p>At ovulation, the mucus when you look at the cervix gets to be more fluid and much more elastic, allowing sperm to go into  the womb quickly. Within five minutes, semen may go from the vagina, through the cervix in to the womb, and also to the funnel-shaped end of a tube—the that is fallopian web web web site of fertilization. The cells lining the fallopian tube enhance fertilization.</p>
<p>If fertilization will not take place, the egg moves along  the fallopian tube towards the womb, where it degenerates, and passes through the womb because of the next period that is menstrual.</p>
<p>The egg, fertilization results if a sperm penetrates. Small hairlike cilia lining the fallopian tube propel the fertilized egg (zygote) through the pipe toward the womb. The cells regarding the zygote divide    repeatedly because the zygote moves along  the tube that is fallopian the womb. The zygote gets in the womb in less than six times.</p>
<p>The cells continue to divide, becoming a hollow ball of cells called a blastocyst in the uterus. The blastocyst implants into the wall surface associated with the womb about 6 times after fertilization.</p>
<p>If several egg is fertilized and released, the maternity involves one or more fetus, often two (twins). Since the genetic product in each egg plus in each sperm is somewhat various, each fertilized egg is significantly diffent. The ensuing twins are hence fraternal twins. Identical twins result whenever one fertilized egg separates into two embryos after this has started to divide. Because one egg had been fertilized by one semen, the genetic product into the two embryos is the identical.</p>
<h2>From Egg to Embryo</h2>
<p>Once per month, an egg is released from an ovary into  a tube that is fallopian. After sexual activity, <a href="https://adult-friend-finder.org/live-sex.html">online sexdating</a> sperm move through the vagina through the cervix and uterus to your fallopian tubes, where one semen fertilizes the egg. The fertilized egg (zygote) divides over and over   repeatedly because it moves along  the fallopian tube to the womb. First, the zygote becomes  a ball that is solid of. Then it turns into  a hollow ball of cells called  a blastocyst.</p>
<p>The blastocyst implants in the wall of the uterus, where it develops into an embryo attached to a placenta and surrounded by fluid-filled membranes inside the uterus.</p>
<h2>Growth of the Blastocyst</h2>
<p>The blastocyst attaches to the lining of the uterus, usually near the top about 6 days after fertilization. This procedure, called implantation, is finished by 9 or 10 day.</p>
<p>The wall surface for the blastocyst is certainly one cellular dense except in a single area, where it&rsquo;s 3 to 4 cells thick. The internal cells into the area that is thickened into the embryo, additionally the exterior cells burrow into the wall surface associated with the womb and become the placenta. The placenta creates hormones that are several assist keep up with the pregnancy. As an example, the placenta creates human chorionic gonadotropin, which stops the ovaries from releasing eggs and stimulates the ovaries to create estrogen and progesterone continuously. The placenta additionally holds air and nutritional elements from mom to waste and fetus materials from fetus to mom.</p>
<p>A number of the cells through the placenta grow into an external layer of membranes (chorion) round the developing blastocyst. Other cells grow into an internal layer of membranes (amnion), which form the amniotic sac. If the sac is created (by about time 10 to 12), the blastocyst is regarded as an embryo. The sac that is amniotic with a definite fluid (amniotic fluid) and expands to envelop the developing embryo, which floats within it.</p>
<h2>Growth of the Embryo</h2>
<p>The stage that is next development may be the embryo, which develops in the amniotic sac, underneath the liner for the womb on a single side. This phase is seen as a the synthesis of many body organs and body that is external. Many organs start to form about 3 days after fertilization, which equals 5 months of being pregnant (because doctors date pregnancy from the   very first time of this female&rsquo;s final period that is menstrual that is typically 14 days before fertilization). At the moment, the embryo elongates, first suggesting a human form. Soon thereafter, the region which will get to be the mind and spinal-cord (neural pipe) starts to develop. The center and blood that is major start to develop earlier—by about time 16. The center begins to pump fluid through bloodstream by time 20, as well as the  very very first red bloodstream cells look the following day. Bloodstream continue steadily to develop when you look at the placenta and embryo.</p>
<p>Practically all organs are totally formed by about 10 months after fertilization (which equals 12 days of being pregnant). The exceptions will be the mind and spinal cord, which continue steadily to form and develop throughout maternity. Most malformations (delivery defects) happen throughout the duration whenever organs are developing. The embryo is most vulnerable to the effects of drugs, radiation, and viruses during this period. Consequently, a expecting girl should never be provided any live-virus vaccinations and take any medications during this time period unless they&rsquo;ve been considered important to protect her wellness (see Drug utilize During Pregnancy).</p>
<h2>Placenta and Embryo at About 8 Weeks</h2>
<p>The placenta and fetus have been developing for 6 weeks at 8 weeks of pregnancy. The placenta kinds tiny hairlike projections (villi) that stretch in to the wall surface associated with the womb. Bloodstream through the embryo, which go through the umbilical cable to the placenta, develop into the villi.</p>
<p>A thin membrane layer separates the embryo&rsquo;s blood when you look at the villi through the mom&rsquo;s blood that flows through the room surrounding the villi (intervillous room). This arrangement does listed here:</p>
<p>Allows materials to be exchanged involving the bloodstream for the mom and therefore of this embryo</p>
<p>Prevents the caretaker&rsquo;s disease fighting capability from attacking the embryo as the mom&rsquo;s antibodies are way too big to feed the membrane layer (antibodies are proteins created by the immune protection system to assist protect the human body against international substances)</p>
<p>The embryo floats in fluid (amniotic fluid), that will be found in a sac (amniotic sac).</p>
<p>The amniotic fluid does the annotated following:</p>
<p>Provides an area where the embryo can develop easily</p>
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