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(I am not a doctor, but) according to www.pregnancy.org, by nine weeks (first trimester) the fetus can flex its limbs and digits, which would be impossible without muscle tissue.
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∙ 14y ago
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Match each stage of pregnancy with its corresponding description A First trimester Marked by the growth and maturation of the fetus's organs and body systems B Second trimester All of the baby's?
1st trimester- all of the baby's body structures and systems develop 2nd trimester- marked by the grown and masturbation of the fetus's organs and body systems. 3rd trimester- the fetal systems continue to grow and mature also the time of the greatest weight gain
Which trimester is most critical for the development of a baby?
The first trimester is most critical for the development of a baby. The babies brain is formed during the first trimester.
What happens at the end of the second trimester of pregnancy?
Body parts are formed.
What happen at the end of the second trimester of pregnancy?
Body parts are formed.
Marked by the growth and maturation of the fetus's organs and body systems?
second trimester
What happens during the first trimester?
The major organs systems have started developing.
What happens during first trimester?
The major organs systems have started developing.
What is the muscle systems perpuse?
digestion
What is a jaw?
It is a muscle in formed in the skull.
What period of pregnancy does the baby develop the most rapidly?
Pregnancy is broken down into three trimesters. The baby develops most rapidly during the first trimester (weeks 1-13). The baby starts off as a collection of cells that develop into an embryo. At 8 weeks, the embryo is called a fetus because the baby resembles a human. At this time, all major organs and systems have been formed. During the second trimester (weeks 14-26), the organs and systems start to mature. During the third trimester (week 27-40), the baby starts to pack on the pounds.
What are the major organs of the organ systems?
Muscle
What are the major organs of the muscular systems?
Muscle
