During the period of the fetus,
A) neurons are first produced.
B) the organism remains awake about 6 hours a day.
C) brain weight increases tenfold.
D) teratogenic damage is the most severe.

Question

Quizplus · Accepted Answer

During the period of the fetus, the brain weight increases tenfold as compared to the brain weight at the end of the embryonic period. This period is characterized by rapid growth and development of the brain, including the formation of new neural connections and the migration of neurons to their final positions in the brain. However, teratogenic damage can occur at any point during pregnancy, including the period of the fetus, and can have severe consequences for the developing fetus. There is no evidence to suggest that the fetus remains awake for a specific number of hours each day during this period, and while neurons are produced during this period, they are also produced during earlier stages of development.

During the Period of the Fetus