My Baby - Week by Week Pregnancy
Week 6 - Heart the Size of a Poppy Seed
Your baby's heart is dividing into chambers and will start beating in a more regular rhythm. Your little embryo is about 0.08 to 0.16 inches from crown to rump (about the size of a BB pellet) and with its "tail," looks more tadpole than human.
But it undergoes a tremendous growth spurt this week: Its major organs - including the kidneys and liver - begin to grow; the neural tube, which connects the brain and spinal cord, will close this week; and your embryo's upper and lower limb buds begin to sprout, which will form the arms and legs. The intestines are also developing and the appendix is in place; and its facial features are starting to form, the nostrils are becoming distinct, and the retinas of the eyes are forming.
See a baby at 6 weeks: Ultrasound image at 6 Weeks
How is your body changing this week? Find out: My Pregnant Body Week 6
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