Male Reproductive System Quiz
Questions: 16 · 10 minutes
1. Where do sperm primarily mature and remain stored before ejaculation?
In the prostate gland
In the epididymis
In the seminal vesicle
In the bulbourethral gland
2. Which physiological change most directly produces a penile erection?
Contraction of the vas deferens forces blood into erectile tissue
Blood flow into erectile tissue increases while venous outflow becomes restricted
The prostate closes the urethra and redirects urine into erectile tissue
The testes release sperm into blood vessels within the penis
3. A gland located below the bladder surrounds the first part of the urethra and adds fluid to semen. Which gland is it?
The prostate gland
The seminal vesicle
The epididymis
The pituitary gland
4. What is a major contribution of the seminal vesicles to semen?
They produce testosterone that regulates sperm formation
They add nutrient-rich fluid containing substances such as fructose
They provide the main site where sperm mature
They release urine-neutralizing fluid directly from the bladder
5. During ejaculation, what helps prevent semen from flowing backward into the bladder?
The epididymis closes around the testis
The seminal vesicles block the ureters
The bladder neck, including the internal urethral sphincter, closes
The external opening of the urethra seals temporarily
6. Which tube carries sperm from the epididymis toward the ejaculatory duct?
The ureter
The vas deferens
The urethra
The seminiferous tubule
7. How does the male urethra normally relate to the urinary and reproductive systems?
It carries only urine; semen exits through the vas deferens
It carries urine and semen at the same time during ejaculation
It transports sperm from the testes to the epididymis
It serves as a passage for either urine or semen at different times
8. In a simplified hormone model, low luteinizing hormone stimulation would most directly reduce which testicular function?
Storage of mature sperm in the epididymis
Secretion of seminal fluid by the prostate
Transport of sperm through the vas deferens
Testosterone production by Leydig cells
9. At the start of puberty, which signal normally prompts the pituitary gland to release luteinizing hormone and follicle-stimulating hormone?
Gonadotropin-releasing hormone from the hypothalamus
Testosterone released by the prostate gland
Fructose released by the seminal vesicles
Sperm released by the epididymis
10. A student says sperm are produced and fully matured in the same structure. Which correction is most accurate?
Sperm are produced in seminiferous tubules and undergo further maturation in the epididymis
Sperm are produced in the epididymis and mature in the vas deferens
Sperm are produced in the seminal vesicles and mature in the testes
Sperm are produced in the prostate and mature in the seminal vesicles
11. Why can prolonged elevation of testicular temperature interfere with sperm production?
Sperm production requires the testes to be warmer than core body temperature
Higher temperature causes seminal fluid to enter the bladder
Higher temperature permanently closes the vas deferens
Sperm production generally functions best when the testes are slightly cooler than core body temperature
12. Follicle-stimulating hormone supports sperm production most directly by acting on which cells?
Smooth-muscle cells of the vas deferens
Glandular cells of the seminal vesicles
Leydig cells between the seminiferous tubules
Sertoli cells within the seminiferous tubules
13. Which organs contain the seminiferous tubules where sperm cells are produced?
The prostate gland
The seminal vesicles
The testes
The epididymides
14. Which simplified sequence correctly traces sperm from its production site toward its exit from the body?
Seminal vesicles → epididymis → ureter → urethra
Epididymis → seminiferous tubules → urethra → vas deferens
Seminiferous tubules → epididymis → vas deferens → urethra
Prostate → vas deferens → seminiferous tubules → urethra
15. A laboratory description says that many sperm have reduced motility. What does motility refer to?
The amount of testosterone carried by each sperm
The volume of fluid produced by the prostate
The ability of sperm to move effectively
The number of chromosomes in each sperm
16. After a vasectomy has been confirmed effective, which change is expected?
Sperm are blocked from joining the ejaculate, while testosterone and most seminal fluid production continue
The prostate stops adding fluid to semen, but sperm transport continues
Testosterone production stops because the testes are disconnected from the urethra
Semen is no longer ejaculated because the urethra is sealed