Each seminiferous tubule is lined by male germ cells called:

Seminal plasma is rich in:

1. Sucrose, calcium and certain enzymes

2. Glucose, sodium and certain enzymes

3. Fructose, calcium and certain enzymes

4. Fructose, sodium and certain enzymes

What purpose is served by the secretions of the bulbourethral glands?

1. Nutrition to sperms

2. They coagulate the seminal plasma

3. Lubrication of penis

4. They fluidize the seminal plasma

For normal fertility, what percent of the sperm in ejaculate must exhibit normal morphology?

For normal fertility, what percent of the sperm in ejaculate must exhibit vigorous motility?