Nokea
A male nurse is teaching a client about the scrotum and the ability of sperm to be effective in fertility. The nurse teaches the client that the sperm is contained in the testes and that its temperature is regulated by which of the following?
- A. Penis and surrounding structures
- B. Bladder tone
- C. Structure of the scrotum
- D. Smooth and skeletal muscles in the scrotum
Correct Answer: D
Rationale: The scrotum contains smooth and skeletal muscles that help regulate the temperature necessary for spermatogenesis.
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Sterilization in the male is accomplished by excising a small portion of the:
- A. Vas deferens
- B. Ejaculatory duct
- C. Epididymis
- D. Seminal vesicles
Correct Answer: A
Rationale: The correct answer is A: Vas deferens. Sterilization in males is typically done through a procedure called a vasectomy, where a small portion of the vas deferens is excised to prevent the transportation of sperm from the testicles to the urethra. The vas deferens is the duct that carries sperm from the epididymis to the ejaculatory duct. Excising a portion of the ejaculatory duct, epididymis, or seminal vesicles would not prevent the transportation of sperm, making choices B, C, and D incorrect.
Wolffian duct is also known as ____________.
- A. Mesonephric duct
- B. Ejaculatory duct
- C. Major sublingual duct
- D. Cystic duct
Correct Answer: A
Rationale: The correct answer is A: Mesonephric duct. The Wolffian duct is also known as the mesonephric duct because it develops in the embryo to form the male reproductive system. It gives rise to various structures such as the epididymis, vas deferens, and seminal vesicles. The other choices are incorrect because the ejaculatory duct is formed by the union of the vas deferens and seminal vesicle, the major sublingual duct is associated with saliva production, and the cystic duct is part of the biliary system and not related to the male reproductive system.
The placenta does which of the following?
- A. Develops from the granulosa cells
- B. Secretes luteinizing hormone
- C. Secretes estrogen
- D. Allows direct mixing of maternal and fetal blood
Correct Answer: C
Rationale: The correct answer is C: The placenta secretes estrogen. The placenta is an endocrine organ that produces hormones, including estrogen, which plays a crucial role in maintaining pregnancy. Estrogen helps in regulating the menstrual cycle, promoting fetal growth, and preparing the body for childbirth. Choices A and B are incorrect because the placenta does not develop from granulosa cells and does not secrete luteinizing hormone. Choice D is incorrect because the placenta does not allow direct mixing of maternal and fetal blood; instead, it facilitates the exchange of nutrients and waste products between the mother and the fetus through a barrier called the placental barrier.
Which of the following statements relating to the corpus luteum is incorrect.
- A. the corpus luteum contains the zona pellucida
- B. the corpus luteum degrades if fertilization does not take place
- C. the corpus luteum is derived from the Latin word meaning yellow body.
- D. the corpus luteum develops from the remaining follicle after ovulation
Correct Answer: A
Rationale: The correct answer is A because the corpus luteum does not contain the zona pellucida. The zona pellucida is a glycoprotein layer surrounding the oocyte, not the corpus luteum. The other choices are incorrect because B is true - the corpus luteum degrades if fertilization does not occur; C is true - corpus luteum derives from Latin for yellow body; and D is true - the corpus luteum develops from the remaining follicle after ovulation.
The hormone produced by the corpus
- A. implantation luteum that helps maintain pregnancy
- B. cleavage is called ________.
- C. fertilization
- D. estrogen
Correct Answer: A
Rationale: The correct answer is A. The hormone produced by the corpus luteum that helps maintain pregnancy is progesterone. After ovulation, the ruptured follicle forms the corpus luteum, which secretes progesterone to support the uterine lining for potential implantation. Choice B is incorrect as cleavage refers to early cell divisions in embryo development. Choice C is incorrect as fertilization is the fusion of sperm and egg. Choice D is incorrect as estrogen is primarily produced by the ovaries.