Question 1

Which structure in the male reproductive system is responsible for the maturation and storage of sperm cells before ejaculation?

Accepted Answer

Epididymis

Question 2

During spermatogenesis, which cell type undergoes meiosis I to produce secondary spermatocytes?

Accepted Answer

Primary spermatocyte

Question 3

What is the function of the acrosome in the sperm cell?

Accepted Answer

Contains enzymes to penetrate the egg

Question 4

Which hormone stimulates the production of testosterone in the interstitial cells of the testes?

Accepted Answer

Luteinizing hormone (LH)

Question 5

A patient presents with low sperm count and decreased testosterone levels. Which feedback mechanism is most likely disrupted?

Accepted Answer

Negative feedback of testosterone on GnRH and LH

Question 6

Which part of the sperm cell contains mitochondria and is responsible for providing energy for movement?

Accepted Answer

Middle piece

Question 7

In the ovarian cycle, what triggers ovulation?

Accepted Answer

A surge in luteinizing hormone (LH)

Question 8

Which structure in the ovary secretes progesterone during the luteal phase?

Accepted Answer

Corpus luteum

Question 9

During oogenesis, what is the chromosome number of the secondary oocyte at ovulation?

Accepted Answer

$$23$$

Question 10

Which hormone is primarily responsible for the development of the endometrial lining during the proliferative phase of the menstrual cycle?

Accepted Answer

Estrogen

Question 11

A woman’s menstrual cycle is disrupted, and she has consistently low levels of both estrogen and progesterone. Which structure is most likely not functioning properly?

Accepted Answer

Corpus luteum

Question 12

Which process increases genetic diversity in humans during sexual reproduction?

Accepted Answer

Meiosis

Question 13

If the pH of seminal fluid drops below 7, what is the most likely effect on sperm viability?

Accepted Answer

Sperm viability decreases

Question 14

Which cell type in the seminiferous tubules acts as a stem cell and can either self-renew or differentiate into primary spermatocytes?

Accepted Answer

Spermatogonium

Question 15

What is the correct sequence of events in oogenesis from the primordial follicle to ovulation?

Accepted Answer

Primordial follicle → Primary follicle → Secondary follicle → Vesicular follicle → Ovulation

Question 16

Which equation best represents the chromosome number change during meiosis in spermatogenesis?

Accepted Answer

$$2n \rightarrow n$$

Question 17

A patient has a mutation that prevents the formation of the blood-testis barrier. Which cell type is most directly affected?

Accepted Answer

Sertoli (sustentacular) cell

Question 18

Which hormone is secreted by the anterior pituitary and promotes follicle development in the ovary?

Accepted Answer

FSH

Question 19

During fertilization, what is the chromosome number of the zygote formed from the fusion of sperm and egg?

Accepted Answer

$$2n$$

Question 20

Which phase of the menstrual cycle is characterized by high progesterone levels and preparation of the endometrium for implantation?

Accepted Answer

Luteal phase

The Human Reproductive System: Structure, Function, and Regulation

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