ATI RN
Biology Human Reproductive System Questions
Question 1 of 5
If a woman has a tumor secreting large amounts of estrogen from the adrenal gland, which of the following will occur?
Correct Answer: B
Rationale: Correct Answer: B - Her luteinizing hormone secretion rate will be totally suppressed Rationale: 1. The tumor secretes large amounts of estrogen, which can lead to negative feedback on the hypothalamus and pituitary gland. 2. Luteinizing hormone (LH) is crucial for ovulation and normal menstrual cycles. 3. High estrogen levels can suppress LH secretion, disrupting ovulation and menstrual cycles. Summary of other choices: A: Progesterone levels may actually be elevated due to the tumor-induced high estrogen levels. C: The disruption of LH secretion can lead to abnormal menstrual cycles. D: High estrogen levels can lead to bone loss due to inhibition of bone formation and increased bone resorption.
Question 2 of 5
During the latter stages of pregnancy, many women experience an increase in body hair growth in a masculine pattern. What is the explanation for this?
Correct Answer: C
Rationale: Step 1: Maternal and fetal adrenal glands secrete androgenic steroids. Step 2: Placenta uses these androgenic steroids to form estrogen. Step 3: Increased estrogen levels can lead to body hair growth. Therefore, the correct answer (C) is supported by the process of androgenic steroids being secreted by the adrenal glands, utilized by the placenta to form estrogen, resulting in increased body hair growth. Summary: A (The ovaries secrete some testosterone along with estrogen) is incorrect as testosterone is not primarily secreted by the ovaries late in pregnancy. B (The fetal ovaries and testes secrete androgenic steroids) is incorrect as the primary source of androgenic steroids in this context is the adrenal glands, not fetal ovaries or testes. D (The placenta secretes estrogen, some of which is metabolized to testosterone) is incorrect as the main source of estrogen in this scenario is from the and
Question 3 of 5
Which of the following is suitable for the fertilization of an egg?
Correct Answer: A
Rationale: The correct answer is A: Sperm. Sperm is the mature male reproductive cell capable of fertilizing an egg. It carries genetic material and is designed for the process of fertilization. Spermatid (B) is an immature sperm cell not yet capable of fertilizing an egg. Primary spermatocyte (C) is a cell undergoing meiosis to produce spermatids. Spermatogonium (D) is a stem cell that gives rise to spermatocytes but is not directly involved in fertilization. Therefore, only sperm (A) is suitable for fertilizing an egg.
Question 4 of 5
Which gland produces thick, clear mucus that cleanses the penile urethra of acidic urine?
Correct Answer: D
Rationale: The correct answer is D: Bulbourethral glands. These glands produce thick, clear mucus that cleanses the penile urethra of acidic urine before ejaculation. This mucus helps neutralize the acidity of urine, creating a more hospitable environment for sperm to travel through. The other choices are incorrect because: A: Testes produce sperm, not mucus. B: Seminal vesicles produce a fluid rich in fructose to nourish sperm. C: Prostate produces a milky fluid that aids in sperm motility.
Question 5 of 5
At the time of ovulation, each secondary oocyte is surrounded by a single layer of cells known as a(n) ________.
Correct Answer: A
Rationale: The correct answer is A: vesicular (Graafian) follicle. At the time of ovulation, the secondary oocyte is surrounded by this structure, which is a mature follicle containing a fluid-filled antrum. This structure is essential for the release of the oocyte during ovulation. The other choices, B: primary follicle, C: primordial follicle, and D: uterine (fallopian) follicle, are incorrect because primary follicles are immature, primordial follicles are the earliest stage of follicle development, and uterine (fallopian) follicle is not a correct anatomical term.