the embryo is moved into the uterus.A sac called the placenta forms around the embryo,connecting it to the uterus by the umbilical cord.the umbilical cord supplies the embryo with nutrients and oxygen from the mother's body.Then the embryo develops into a fetus and limbs, body systems, bones, sense organs, and the brain.
The embryo moves into the uterus and the umbilical cord carries certain nutrients to the embryo from the placenta. The body systems, limbs, bones, and brain start to form.
first tree month of embrion life
The first three months of pregnancy
The major organs systems have started developing.
The major organs systems have started developing.
The traditional designations are: During the first trimester - abortion (spontaneous abortion, if you want to avoid ambiguity) During the second trimester - miscarriage During the third trimester - stillbirth
Some people gain no weight during the first trimester, particularly if they have morning sickness. Other people gain a small amount, particularly towards the end of the first trimester. The most weight is gained during the second trimester though.
The first trimester is most critical for the development of a baby. The babies brain is formed during the first trimester.
a baby
What hormones could be implicated in failing to maintain the pregnancy during the first trimester?
the organs grow larger
The body organs are developed and refined.
The organs mature.
Hormones are changing
no they do not