Nokea
With respect to the effects of testosterone in the male which statement is incorrect?
- A. testosterone inhibits the secretion of luteinising hormone
- B. testosterone stimulates the secretion of inhibin from leydig cells
- C. testosterone induces and maintains male sexual functions
- D. testosterone stimulates protein anabolism and bone growth.
Correct Answer: B
Rationale: The correct answer is B because inhibin is primarily secreted by Sertoli cells in the testes, not Leydig cells. Testosterone actually stimulates the secretion of inhibin from Sertoli cells. In contrast, Leydig cells produce testosterone in response to luteinising hormone (Choice A). Testosterone does play a key role in inducing and maintaining male sexual functions (Choice C) and also stimulates protein anabolism and bone growth (Choice D). Thus, Choice B is incorrect as Leydig cells do not secrete inhibin.
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The corpus luteum secretes whereas oogenesis will produce ___
- A. FSH. ova/ ovum.
- B. LH.
- C. 2; 2
- D. prolactin.
Correct Answer: A
Rationale: The correct answer is A because the corpus luteum secretes progesterone, not FSH. Oogenesis produces ova/ovum, not FSH, LH, or prolactin. FSH and LH are hormones produced by the pituitary gland to regulate the menstrual cycle, not by the corpus luteum or involved in ova production. Prolactin is a hormone involved in milk production, not in oogenesis or corpus luteum function. Therefore, A is correct as it correctly identifies the function of the corpus luteum and the product of oogenesis.
A client is concerned about her irregular menstrual periods since she has increased her daily workouts at the gym to 2 hours each day. What is the nurses’ best response?
- A. “Do you want to talk about the need for that much exercise?”
- B. “Exercise is healthy but can decrease body fat and cause irregular periods.”
- C. “Bingeing and purging can cause electrolyte problems in your body.”
- D. “Anorexic behavior can result in decreased estrogen levels.”
Correct Answer: B
Rationale: Rationale:
The correct answer is B because excessive exercise can lead to decreased body fat, which in turn disrupts hormone levels causing irregular periods. Choice A is inappropriate as it doesn't address the underlying issue. Choices C and D are incorrect as they refer to different conditions (bulimia and anorexia) not related to the client's concern.
What area experiences the greatest changes in a menstrual cycle?
- A. vagina
- B. perimetrium
- C. cervix
- D. endometrium
Correct Answer: D
Rationale: The correct answer is D: endometrium. The endometrium undergoes the most significant changes during the menstrual cycle. It thickens and sheds in response to hormonal changes for potential implantation of a fertilized egg. The vagina (A), perimetrium (B), and cervix (C) do not experience the same level of cyclic changes as the endometrium. The vagina is primarily a passageway, the perimetrium is the outer layer of the uterus, and the cervix mainly functions as an opening to the uterus. Therefore, the endometrium is the area that experiences the greatest changes in a menstrual cycle due to its role in preparing for possible pregnancy and shedding if implantation does not occur.
What is the first structure to receive the oocyte?
- A. fimbriae
- B. uterine tube
- C. infundibulum
- D. uterus
Correct Answer: A
Rationale: The correct answer is A: fimbriae. Fimbriae are finger-like projections at the end of the fallopian tube that capture the released oocyte from the ovary during ovulation. The fimbriae create a gentle sweeping motion to guide the oocyte into the uterine tube for fertilization. The other choices are incorrect because the oocyte needs to be captured by the fimbriae before entering the uterine tube, infundibulum, or uterus. The fimbriae are the initial structure responsible for receiving the oocyte, making choice A the correct answer.
Rhabdomyosarcoma is the malignant tumor of the
- A. Smooth muscle
- B. Cardiac
- C. Visceral muscle
- D. Striated muscle
Correct Answer: D
Rationale: Rhabdomyosarcoma is a malignant tumor arising from striated muscle cells, hence the correct answer is D. Striated muscle cells are also known as skeletal muscle cells, which are voluntary muscles responsible for movement. Smooth muscle (Choice A) and visceral muscle (Choice C) are types of involuntary muscles found in internal organs, while cardiac muscle (Choice B) is the muscle specific to the heart. Therefore, choices A, B, and C are incorrect for this question.