Nightingale Physiology Practice Test

Which gland contributes an alkaline component to semen that helps sperm viability?

Prostate gland Seminal vesicles Bulbourethral glands Testes

Correct Answer:

Prostate gland

Explanation:

Sperm need a environment that isn’t hostile to them once they enter the female reproductive tract, which is quite acidic. Semen includes fluids from several glands, but the alkaline component that directly helps sperm viability comes from the prostate. The prostate gland releases a slightly alkaline fluid rich in bicarbonate and other substances that raises the pH of semen, counteracting vaginal acidity and supporting sperm survival and motility. While the seminal vesicles contribute most of the semen volume and nutrients, and the bulbourethral glands provide lubrication and some neutralization, the prostate’s alkaline secretion is the key factor that protects and enables sperm to function in the acidic environment downstream.

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