Answer to Question 1
2
1. Incorrect. Infants respond positively to high-pitched voices.
2. Correct. They know the sound of their mother's voice early.
3. Incorrect. Each infant has a unique odor.
4. Incorrect. Infants learn rapidly to distinguish the odor of their mother's breast milk.
Answer to Question 2
2
1, 3, 4. Incorrect. The myometrium is made of layers of smooth muscles that extend in three dif-ferent directions. These muscles assist in the birth process by expelling the fetus, ligating blood vessels after birth, and controlling the opening of the cervical os.
2. Correct. The myometrium is made of layers of smooth muscles that extend in three different directions. These muscles assist in the birth process by expelling the fetus, ligating blood vessels after birth, and controlling the opening and the cervical os.