Question 1

Which of the following structures is responsible for producing sperm in the male reproductive system?

Accepted Answer

Seminiferous tubules

Question 2

A patient presents with a painless, solid mass in his testis. He had mumps as a child that led to orchitis. What is the most likely diagnosis and risk factor involved?

Accepted Answer

Testicular cancer; cryptorchidism

Question 3

Which muscle contracts to pull the testes closer to the body wall in response to cold temperatures, helping regulate the temperature for optimal sperm development?

Accepted Answer

Dartos muscle

Question 4

During ejaculation, which sequence correctly describes the path sperm takes from the testes to the external urethral orifice?

Accepted Answer

Seminiferous tubules → epididymis → ductus deferens → ejaculatory duct → urethra

Question 5

Which gland produces a thick, clear mucus that lubricates the glans penis and neutralizes traces of acidic urine in the urethra during sexual arousal?

Accepted Answer

Bulbo-urethral gland

Question 6

A vasectomy is a surgical procedure that provides nearly 100% effective birth control by cutting and ligating which structure?

Accepted Answer

Ductus deferens

Question 7

Which of the following is a function of the pampiniform venous plexus in the male reproductive system?

Accepted Answer

Absorbs heat from testicular arteries to keep testes cool

Question 8

Which region of the urethra runs through the penis and opens at the external urethral orifice?

Accepted Answer

Spongy urethra

Question 9

Which hormone is released by the hypothalamus to initiate the hormonal cascade that regulates spermatogenesis?

Accepted Answer

Gonadotropin-releasing hormone (GnRH)

Question 10

A male patient is diagnosed with benign prostatic hyperplasia. What is a likely complication of this condition if left untreated?

Accepted Answer

Urinary tract infections or kidney damage

Question 11

Which of the following correctly describes the process and outcome of meiosis during spermatogenesis?

Accepted Answer

Meiosis produces four haploid sperm cells from each primary spermatocyte

Question 12

Which cell type in the seminiferous tubules is responsible for producing testosterone?

Accepted Answer

Interstitial (Leydig) cells

Question 13

A man is exposed to high temperatures for prolonged periods (e.g., frequent hot tub use). What is the most likely effect on his fertility?

Accepted Answer

Inhibition of sperm maturation

Question 14

Which of the following is a major function of the prostate gland during ejaculation?

Accepted Answer

Secretes milky, slightly acidic fluid that activates sperm

Question 15

Which of the following equations correctly represents the reduction in chromosome number during spermatogenesis?

Accepted Answer

$$2n \rightarrow n$$

Question 16

Which hormone is responsible for stimulating interstitial (Leydig) cells to produce testosterone?

Accepted Answer

Luteinizing hormone (LH)

Question 17

A patient with erectile dysfunction is prescribed sildenafil (Viagra). What is the drug’s mechanism of action?

Accepted Answer

Enhances the effect of nitric oxide (NO) to relax smooth muscle in arterioles

Question 18

Which of the following sexually transmitted infections is most commonly associated with an increased risk of cervical cancer and is preventable by vaccination?

Accepted Answer

Human papillomavirus (HPV)

Question 19

Which of the following best describes the role of androgen-binding protein (ABP) in spermatogenesis?

Accepted Answer

ABP binds testosterone, keeping its concentration high near spermatogenic cells

Question 20

Which of the following is a correct statement about the blood-testis barrier formed by sustentocytes?

Accepted Answer

It prevents sperm antigens from escaping into the blood and triggering an immune response

Male Reproductive System: Anatomy and Physiology (Chapter 26 Part B)

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