Nokea
Which of the following could inhibit the initiating labor?
- A. Administration of an antagonist of the actions of progesterone
- B. Administration of luteinizing hormone
- C. Administration of an antagonist of prostaglandin E2 effects
- D. Mechanically dilating and stimulating the cervix
Correct Answer: C
Rationale: The correct answer is C because prostaglandin E2 plays a key role in initiating labor by promoting uterine contractions. Administering an antagonist of prostaglandin E2 effects would inhibit this process. Choice A is incorrect as progesterone levels decrease to trigger labor. Choice B is incorrect as luteinizing hormone does not directly influence labor initiation. Choice D is incorrect because mechanical dilation does not inhibit labor initiation but rather can facilitate it.
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The female Bartholin glands correspond to the male _____.
- A. prostate
- B. Cowper's
- C. seminal vesicle
- D. glans
Correct Answer: B
Rationale: The female Bartholin glands are homologous to the male Cowper's glands. Both glands secrete fluid to lubricate the reproductive tract during sexual arousal. The prostate gland (choice A) is not the correct answer as it is a different structure that produces seminal fluid. The seminal vesicles (choice C) secrete a significant portion of the seminal fluid but are not the male counterpart to the Bartholin glands. The glans (choice D) refers to the tip of the penis and is not the correct counterpart to the Bartholin glands. Therefore, the correct answer is B, Cowper's glands.
Parturition occurs the fetus is the ________. approximately how many days after a
- A. amnion woman's last menstrual cycle ______.
- B. placenta
- C. 180 days
- D. chorionic villi
Correct Answer: D
Rationale: The correct answer is D: chorionic villi. Parturition occurs when the fetus releases cortisol, which stimulates the production of prostaglandins leading to uterine contractions. Chorionic villi are the fetal tissue that produces cortisol, making it the key factor triggering labor.
A: Amnion is the innermost membrane around the fetus, not directly involved in labor initiation.
B: Placenta plays a role in nutrient exchange but not in triggering labor.
C: 180 days is a set time frame and does not relate to the process of parturition.
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.
Bat shaped bone that form part of the base of the skull is called as
- A. Ethmoid bone
- B. Sphenoid bone
- C. Parietal bone
- D. Occipital bone
Correct Answer: B
Rationale: The correct answer is B: Sphenoid bone. The sphenoid bone is bat-shaped and forms part of the base of the skull. It is located in the middle of the skull, helping to connect the cranial bones. The other choices, A: Ethmoid bone, C: Parietal bone, and D: Occipital bone, do not match the description of a bat-shaped bone at the base of the skull. The ethmoid bone is located between the eyes, the parietal bone forms the top and sides of the skull, and the occipital bone forms the back and base of the skull. Therefore, B is the correct answer based on the specific description given in the question.
Spermatogenesis is a function of the _____.
- A. tunica albuginea
- B. rete testis
- C. seminiferous tubule
- D. seminal vesicle
Correct Answer: C
Rationale: The correct answer is C: seminiferous tubule. Spermatogenesis is the process of sperm production and occurs within the seminiferous tubules of the testes. These tubules contain specialized cells called germ cells that undergo meiosis to produce sperm. The tunica albuginea is a fibrous layer surrounding the testes, the rete testis is a network of tubules where sperm is transported, and the seminal vesicle is a gland that produces seminal fluid, not involved in sperm production. Therefore, the seminiferous tubule is the correct choice for spermatogenesis.