$$\text{Total Sperm Count} = \text{Sperm Production Rate} \times \text{Time (days)}$$

Question 1

Which of the following is the primary sex organ of the male reproductive system, and what are its main functions?

Accepted Answer

Testis; spermatogenesis and testosterone production

Question 2

A patient presents with a painless, undescended testicle on one side. What is the most likely diagnosis?

Accepted Answer

Unilateral cryptorchidism

Question 3

Which muscle in the scrotum is responsible for regulating testicular temperature by contracting or relaxing?

Accepted Answer

Dartos muscle

Question 4

Which gland produces the majority of the seminal fluid, and what percentage does it contribute?

Accepted Answer

Seminal vesicle; 60%

Question 5

A 25-year-old male presents with sudden testicular pain and swelling. Which of the following is the most appropriate initial assessment?

Accepted Answer

Assess for testicular torsion

Question 6

Which of the following correctly traces the pathway of sperm from the testis to the exterior of the body?

Accepted Answer

Testis → Epididymis → Ductus deferens → Ejaculatory duct → Urethra

Question 7

Which of the following is NOT a function of testosterone?

Accepted Answer

Inhibits bone growth and density

Question 8

A patient has blood in his semen (haematospermia). Which structure is most likely involved?

Accepted Answer

Prostate gland

Question 9

Which of the following glands secretes an alkaline mucus that neutralizes urinary acids and lubricates the urethra?

Accepted Answer

Bulbourethral (Cowper's) gland

Question 10

Which region of the urethra passes through the prostate gland?

Accepted Answer

Prostatic urethra

Question 11

A patient with persistent erectile dysfunction should be evaluated for which of the following red flag symptoms?

Accepted Answer

Scrotal swelling with fever

Question 12

Which structure stores spermatozoa for up to two weeks and is responsible for their physiological maturation?

Accepted Answer

Epididymis

Question 13

Which of the following is a function of the prostate gland?

Accepted Answer

Secretes enzymes that activate sperm motility

Question 14

Which part of the penis forms the glans penis?

Accepted Answer

Corpus spongiosum

Question 15

A male patient presents with swelling and fever in the scrotum. Which of the following is the most urgent concern?

Accepted Answer

Infection or testicular torsion

Question 16

Which of the following best describes the exocrine and endocrine products of the testes?

Accepted Answer

Exocrine: sperm; Endocrine: testosterone

Question 17

Which of the following equations best represents the relationship between sperm production rate and total sperm count per day?

Accepted Answer

$$	ext{Total Sperm Count} = 	ext{Sperm Production Rate} 	imes 	ext{Time (days)}$$

Question 18

Which of the following is a direct effect of testosterone on the male body?

Accepted Answer

Increased bone density

Question 19

A blockage in which structure would most directly prevent sperm from reaching the prostatic urethra?

Accepted Answer

Ejaculatory duct

Question 20

Which of the following best explains why the scrotum lacks superficial fat?

Accepted Answer

To regulate testicular temperature for optimal spermatogenesis

The Male Reproductive System: Structure, Function, and Clinical Considerations

Study Guide - Practice Questions