Question 1

Which of the following best describes the primary function of the male reproductive system?

Accepted Answer

To generate gametes and deliver them for fertilization

Question 2

The scrotum plays a critical role in sperm production. Which of the following best explains why?

Accepted Answer

It provides a cooler environment necessary for spermatogenesis

Question 3

Which muscle is responsible for adjusting the position of the testes in response to temperature changes, and what is its function?

Accepted Answer

Cremaster muscle; elevates or lowers the testes to regulate temperature

Question 4

Which structure in the testes is the site of spermatogenesis?

Accepted Answer

Seminiferous tubules

Question 5

During spermatogenesis, what is the correct sequence of cell types from start to finish?

Accepted Answer

Spermatogonia → Primary spermatocyte → Secondary spermatocyte → Spermatid → Sperm

Question 6

Which of the following best describes the function of the blood-testis barrier?

Accepted Answer

It prevents immune cells from attacking developing sperm cells

Question 7

A patient has a mutation that prevents the formation of the acrosome in sperm. Which process would most likely be affected?

Accepted Answer

Penetration of the egg during fertilization

Question 8

Which accessory gland produces a secretion that neutralizes acidic urine in the urethra and lubricates the tip of the penis?

Accepted Answer

Bulbourethral (Cowper's) gland

Question 9

During meiosis I in spermatogenesis, what is the result in terms of cell number and chromosome content?

Accepted Answer

Two secondary spermatocytes, each with 23 chromosomes

Question 10

Which hormone is secreted by the hypothalamus to regulate male reproductive function, and what is its primary target?

Accepted Answer

Gonadotropin-releasing hormone (GnRH); anterior pituitary

Question 11

A male patient has a blockage in his vas deferens. Which of the following is the most likely consequence?

Accepted Answer

Sperm will not be transported from the epididymis to the urethra

Question 12

Which of the following best describes the process of capacitation?

Accepted Answer

A series of changes that sperm undergo in the female reproductive tract to become capable of fertilizing an egg

Question 13

Which phase of the male sexual response is primarily under sympathetic nervous system control and results in the movement of sperm and glandular secretions into the urethra?

Accepted Answer

Emission

Question 14

Which of the following is a correct summary of the hormonal feedback loop involving testosterone?

Accepted Answer

Testosterone inhibits the release of GnRH and LH via negative feedback

Question 15

If a male has a genetic defect that prevents nurse (Sertoli) cells from functioning, which process would be most directly affected?

Accepted Answer

Support and nourishment of developing sperm cells

Question 16

Which part of the sperm contains mitochondria and is responsible for generating ATP for motility?

Accepted Answer

Neck/Midpiece

Question 17

A patient undergoes a surgical removal of the prepuce. What is the most likely reason for this procedure?

Accepted Answer

To reduce the risk of infection and improve hygiene

Question 18

Which of the following best describes the result of meiosis II during spermatogenesis?

Accepted Answer

Four spermatids, each with 23 chromosomes

Question 19

Which of the following is NOT a function of the penis?

Accepted Answer

Production of sperm

Question 20

Which hormone stimulates interstitial (Leydig) cells to produce testosterone?

Accepted Answer

Luteinizing hormone (LH)

Chapter 26 – Male Reproductive System: Structure, Function, and Gametogenesis

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