Bio 112 Chapter 20 Practice Test - Pregnancy

1. Pregnancy is the condition of having a developing offspring in the uterus for at least 4 weeks.

A. true

B. false

2. The neonatal period is

A. from birth to death

B. is part of the postnatal period

C. is from fertilization to birth

D. is from fertilization to four weeks after fertilization

3. During which period are the primary germ layers laid down?

A. fetal period

B. embryonic period

C. neonatal period

D. postnatal period

4. Which primary germ layer gives rise to muscles?

A. endoderm

B. mesoderm

C. ectoderm

5. Fertilization takes place where?

A. in the uterus

B. in a uterine tube

C. in the cervix

D. in the vagina

6. The ___________ is a hole between the right atrium and _______.

A. ductus arteriosis, pulmonary trunk

B. foramen ovale, pulmonary trunk

C. ductus arteriosis, aorta

D. foramen ovale, left atrium

E. foramen ovale, right ventricle

7. Estrogen production increases during pregnancy.

A. true

B. false

8. Implantation of the blastocyst normally occurs in the

A. wall of the cervix

B. in the wall of the uterus

C. in the wall of the vagina

D. in the wall of a uterine tube

9. Which of the following inhibits uterine contractions?

A. relaxin

B. oxytocin

C. A and B

D. testosterone