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The Endowment for Human Development
The Endowment for Human Development
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Heart and Circulatory System


3 weeks

From The Biology of Prenatal Development.Buy Now

Script: جڏھن ھن شروعاتي رت جا خانا بیضوي ٿیلھيءَ ۾ ظاھر ٿیندا آھن تڏھن سڄي گرڀ ۾ رت جون نسون ڦھلجي ویندیون آھن ۽ نليءَ جھڙي دل ظاھر ٿیندي آھي

ترت پوءِ تڪثرو وڌندڙ دل ظاھر ٿیڻ لڳندي آھي جو دل جا الڳ الڳ خانا ٺھن لڳندا آھن

گرڀ ڌارڻ ڪرڻ کان ٽي ھفتا ۽ ھڪُ ڌینھن پوءِ دل دڙڪڻ لڳندي آھي

سڀ کان پھریون بدني سرشتو آھي تنتي سرشتو یا اُن سان جُڙیل عضوا جیڪي ڪم ڪرڻ شروع ڪن ٿا

All ages referenced to fertilization, not last menstrual period.
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