Chapter 3: Prenatal Development and Birth

Q37-46 (10 total)

37. Which sequence correctly identifies the three prenatal stages?

C. Germinal, embryonic, fetal.

38. The germinal period generally covers:

A. Fertilization through approximately the first two weeks, including cleavage and implantation.

39. Which event is especially characteristic of the embryonic period?

B. Major organ structures begin forming during organogenesis.

40. The fetal period generally begins around:

C. Week 9 after fertilization, continuing until birth.

41. Which statement best describes prenatal development?

B. Development proceeds from relatively simple beginnings toward increasing differentiation and functional complexity.

42. What is a teratogen?

A. A substance or environmental exposure that can disrupt prenatal development.

43. Which set contains examples of potential prenatal teratogens?

B. Alcohol, certain infections, and some medications or toxic chemicals.

44. Why is the timing of teratogen exposure important?

C. Different organs and systems have different sensitive periods, so exposure timing can influence the type and severity of effects.

45. What does fetal learning demonstrate?

B. Fetuses can respond to repeated sensory experiences, such as familiar sounds, before birth.

46. Which statement about fetal sensory development is most accurate?

C. Sensory systems develop at different rates; the fetus can detect sound later in pregnancy, while vision is limited in the womb.