Nokea
What complication can result from untreated respiratory distress in the newborn?
- A. Esophageal atresia
- B. Gastric dilation
- C. Cold stress
- D. Reopening of the foramen ovale
Correct Answer: D
Rationale: Respiratory distress can cause increased pressure in the right ventricle, causing reopening of the foramen ovale.
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What is the total number of chromosomes contained in a mature sperm or ovum?
- A. 22
- B. 23
- C. 44
- D. 46
Correct Answer: B
Rationale: Gametes (sex cells) contain 23 chromosomes.
A pregnant woman states, 'My husband hopes I will give him a boy because we have three girls.' What will the nurse explain to this woman?
- A. The sex chromosome of the fertilized ovum determines the gender of the child.
- B. When the sperm and ovum are united, there is a 75% chance the child will be a girl.
- C. When the pH of the female reproductive tract is acidic, the child will be a girl.
- D. If a sperm carrying a Y chromosome fertilizes an ovum, then a boy is produced.
Correct Answer: D
Rationale: When a Y-bearing sperm fertilizes an ovum, a male child is produced.
The school nurse is counseling a group of adolescent girls. What does the nurse explain about sperm ejaculated near the cervix?
- A. They are destroyed by the acidic pH of the vagina.
- B. They survive up to 5 days and can cause pregnancy.
- C. They lose their motility in about 12 hours after intercourse.
- D. They are usually pushed out of the vagina by the muscular action of the vaginal wall.
Correct Answer: B
Rationale: Sperm ejaculated near the cervix can survive up to 5 days and cause pregnancy even before ovulation.
What is the most common site for fertilization?
- A. Lower segment of the uterus
- B. Outer third of the fallopian tube near the ovary
- C. Upper portion of the uterus
- D. Area of the fallopian tube farthest from the ovary
Correct Answer: B
Rationale: Fertilization takes place in the outer third of the fallopian tube, which is closest to the ovary.
A woman who is 25 weeks pregnant asks the nurse what her fetus looks like. What does the nurse explain is one physical characteristic present in a 25-week-old fetus?
- A. Lanugo covering the body
- B. Constant motion
- C. Skin that is pink and smooth
- D. Eyes that are closed
Correct Answer: A
Rationale: By 25 weeks, the body of the fetus is covered with lanugo, the eyes are open, the skin is wrinkled, and the fetus has definite periods of movement and sleeping.