Nokea
Of the following antibiotics, which one is used to treat chlamydia?
- A. Acyclovir
- B. Ciprofloxacin
- C. Tetracycline
- D. Ceftriaxone
Correct Answer: C
Rationale: Tetracycline is commonly used to treat chlamydia infections.
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Lips of the vagina is termed as
- A. Labial
- B. Labia
- C. Labrum
- D. Labor
Correct Answer: B
Rationale: The correct answer is B: Labia. The term "labia" refers to the lips of the vagina. It is the plural form of "labium." "Labial" (A) refers to anything related to the lips, "Labrum" (C) refers to a rim or edge, and "Labor" (D) refers to the process of childbirth. Therefore, B is correct as it specifically refers to the structure being described.
What is the function of the prolactin hormone?
- A. Prolactin promotes the production of milk from elements in the blood.
- B. Prolactin stimulates the development of alveoli.
- C. Prolactin stimulates increased production of tubules and ducts.
- D. Prolactin promotes the growth and development of the breasts' fatty tissue.
Correct Answer: A
Rationale: Prolactin is primarily responsible for milk production in the mammary glands.
Which hormone is produced by the corpus luteum that helps maintain pregnancy?
- A. Estrogen
- B. Testosterone
- C. Progesterone
- D. Relaxin
Correct Answer: C
Rationale: The correct answer is C: Progesterone. The corpus luteum produces progesterone, which is essential for maintaining the uterine lining and supporting early pregnancy. Progesterone helps prevent contractions of the uterus and supports the development of the placenta. Estrogen (A) is important for the initial thickening of the uterine lining but does not play a direct role in maintaining pregnancy. Testosterone (B) is not involved in pregnancy maintenance. Relaxin (D) helps relax the uterine muscles but is not primarily responsible for maintaining pregnancy.
Which of the following is a surgical procedure in which a pendulous breast is lifted and fixed to the chest wall?
- A. Mastostomy
- B. Mastectomy
- C. Mastopexy
- D. Mesopexy
Correct Answer: C
Rationale: The correct answer is C: Mastopexy. This surgical procedure involves lifting and fixing a pendulous breast to the chest wall to achieve a more youthful and firmer appearance. It does not involve removal of breast tissue like in mastectomy (B) or creation of a new breast mound like in mastostomy (A). Mesopexy (D) is not a recognized surgical procedure for breast lifting.
Which of the following decreases the resistance in the arteries leading to the sinuses of the penis?
- A. Stimulation of the sympathetic nerves innervating the arteries
- B. Nitric oxide
- C. Inhibition of activity of the parasympathetic nerves leading to the arteries
- D. All of the above
Correct Answer: B
Rationale: The correct answer is B: Nitric oxide. Nitric oxide is a potent vasodilator that relaxes smooth muscle in the arterial walls, leading to decreased resistance in the arteries. This results in increased blood flow to the sinuses of the penis, contributing to erectile function.
A: Stimulation of the sympathetic nerves innervating the arteries would actually increase resistance by causing vasoconstriction.
C: Inhibition of activity of the parasympathetic nerves leading to the arteries would also increase resistance as parasympathetic stimulation typically leads to vasodilation.
Therefore, the correct answer is B as it directly causes vasodilation and decreases resistance in the arteries leading to the sinuses of the penis, which is essential for erectile function.