Biology Human Reproductive System Related

Review Biology Human Reproductive System related questions and content

At the time of ovulation, each secondary oocyte is surrounded by a single layer of cells known as a(n) ________.

  • A. vesicular (Graafian) follicle
  • B. primary follicle
  • C. primordial follicle
  • D. uterine (fallopian) follicle
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.