Question

Secretion of which gland flushes the urethra before ejaculation?

• A. Bulbo urethral gland
• B. Cowper's gland
• C. Ampulla
• D. Prostate gland

Hint:

Remember that the Bulbourethral gland (Cowper's gland) produces the clear, viscous, pre-ejaculatory fluid.
This secretion cleanses and neutralizes the urethra, ensuring optimal sperm viability during the subsequent ejaculation phase.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
In male mammals, accessory sex glands contribute vital fluid components to the seminal plasma.
Before semen is ejaculated, the acidic residue left by urine in the urethra must be neutralized and flushed to protect the sperm cells.

Step 2: Detailed Explanation:
Let us analyze the functions of these glands:
- Bulbourethral gland (Cowper's gland): These are paired accessory sex glands located dorsolateral to the pelvic urethra.
Their primary function is to secrete a clear, alkaline, mucinous pre-ejaculatory fluid.
This fluid is released prior to ejaculation to flush, lubricate, and neutralize the acidic environment of the pelvic and penile urethra, preparing a safe pathway for sperm.
Note: While "Bulbourethral gland" and "Cowper's gland" are synonymous, "Bulbourethral gland" is the formal veterinary anatomical term and is the primary designated choice.
- Ampulla: A glandular enlargement of the terminal portion of the vas deferens that serves primarily as a temporary storage reservoir for spermatozoa.
- Prostate gland: Secretes alkaline fluid that contributes to the volume of the seminal plasma and promotes sperm motility, but does not serve as a pre-ejaculatory flushing agent.

Step 3: Final Answer:
Thus, the formal anatomical term for the gland whose secretion flushes the urethra before ejaculation is the Bulbourethral gland.