The brain , the heart, the lungs and the spinal column.
The third trimester begins at 29 weeks of pregnancy
Nerves begin to develop in a fetus during the first trimester of pregnancy, around 5-6 weeks gestation.
Nerves begin to develop in a fetus during the first trimester of pregnancy, around the 3rd to 4th week after conception.
Gaining any or some weight during the first trimester depends on your weight to begin with. You can gain none, two pounds, or six. It really does just depend on you starting weight.My source was: caloriecount.about.com/forums/pregnancy.../gain-first-trimester(It's a great website for weight, how to lose it, and all questions.)
Yes. Sore breasts in early pregnancy are common. As they begin to develop the mechanism for producing milk, there are a lot of changes and things get a bit crowded.
The toenails, lips, and eyelashes of a fetus typically begin to appear during the second trimester of pregnancy, around the 14th to 26th week. This period is characterized by significant growth and development of facial features and extremities. By the end of the second trimester, these features become more defined as the fetus continues to mature.
In the 3rd week of pregnancy called gastrulation, specialized cells on the dorsal side of the fetus begin to change shape and form the neural tube.
The second trimester is when movement can be felt by the mother, however movement begins in the first trimester but is small and light enough for the mother not to be able to feel it
Fingers and toes begin to develop during the first trimester of pregnancy, specifically around the 8th week. By the end of the first trimester, typically around 12 weeks, these digits are more distinctly formed. This process is part of the overall development of the limbs during early fetal growth.
Late in the third trimester
The way in which a woman's body changes during pregnancy begins in the first trimester. Her breasts will grow and she will begin to gain weight. Throughout her pregnancy, her stomach will increase in size to accommodate the growing baby and she may get stretch marks. Near the end of her pregnancy, her ankles may swell due to water retention.
Fingerprints begin to form during the third trimester of pregnancy and remain constant throughout a person's life. Therefore, individuals of any age will have fingerprints.