Nokea
What protects the fetus from most bacterial infections?
- A. The yolk sac
- B. The placental barrier
- C. The cotyledons
- D. The chorionic villa
Correct Answer: B
Rationale: The placental barrier protects the embryo/fetus from most bacteria, but not from viruses or drugs. The cotyledons are sections that make up the placenta. The chorionic villa are tiny vascular projections on the chorionic surface that help form the placenta.
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Which hormone is secreted by the placenta?
- A. Follicle-stimulating hormone (FSH)
- B. Alpha-fetoprotein (AFP)
- C. Human chorionic gonadotropin (HCG)
- D. Luteinizing hormone (LH)
Correct Answer: C
Rationale: The placenta functions as an endocrine gland, secreting estrogen, progesterone, and HCG.
Smoking by the mother can have what effect in the fetus?
- A. Hearing deficits
- B. Neuromuscular deformities
- C. Cerebral palsy
- D. Low birth weight
Correct Answer: D
Rationale: Smoking has been proven to cause slow intrauterine growth and low birth weight.
The chorion and the amnion are the two components of the ___ membrane.
Correct Answer: fetal
Rationale: The fetal membrane is composed of the chorion and the amnion.
A pregnant teenager presents with the following complaints. Which complaint could be an indicator of a serious complication?
- A. Painful hemorrhoids
- B. Linea nigra
- C. Visual disturbances
- D. Low back pain
Correct Answer: C
Rationale: Visual disturbances may be an indicator of increased blood pressure and retained fluids. These are indicators of eclampsia. Hemorrhoids, linea nigra, and back pain are common discomforts of pregnancy.
At what week of fetal development can the nurse expect to first hear fetal heart tones with an amplified stethoscope?
- A. 10
- B. 12
- C. 14
- D. 16
Correct Answer: D
Rationale: During week 16, the fetal heart can be heard with an amplified stethoscope.