lungs
14 weeks
The last 7 months of prenatal development typically involve rapid growth and maturation of the fetus. Organs and systems continue to develop and reach functional levels, and the fetus gains weight in preparation for birth. During this time, the fetus also practices breathing and swallowing to prepare for life outside the womb.
During this time period, the embryo is known as a fetus. It continues to grow and develop, with its organs maturing and becoming more functional. By the time of birth, the fetus is fully developed and ready to survive outside the womb.
digestive and respiratory
After the first eight weeks, the embryo is referred to as a fetus. At this stage, the major organs have formed and the fetus continues to grow and develop until birth.
eyes develop lips start to form Vocal cords develop.
Human organs generally finish developing within the first few years of life, but some continue to grow and mature into adolescence and early adulthood. The brain, for example, is not fully developed until the mid-20s. However, organs like the heart and lungs are typically fully functional by early childhood.
An embryo can last for about 5-7 days after fertilization before it implants into the uterus. After implantation, the embryo continues to develop into a fetus throughout pregnancy.
After a sperm fertilizes an egg its referred to as a zygote. Then it becomes a fetus, I believe after the first trimester.
During the third trimester, a developing fetus undergoes significant growth and maturation. The fetus gains weight rapidly, accumulating fat, which helps regulate body temperature after birth. Additionally, major organs and systems continue to develop and become more functional, particularly the lungs and brain. By the end of this trimester, the fetus is typically positioned head-down in preparation for birth.
No, it is not possible for a fetus with a tail to develop normally during pregnancy.
It will develop walking.