It secrete a substances  that form the semen and protect the sperm cells.

The statement you provided seems to be referring to the male reproductive system, specifically the prostate gland and seminal vesicles. Here's a step-by-step explanation:

1. The male reproductive system is responsible for producing and delivering sperm.

2. The prostate gland and seminal vesicles play a crucial role in this process.

3. The prostate gland is located just below the bladder. It produces a fluid that, together with sperm cells from the testicles and fluids from other glands, makes up semen.

4. This fluid from the prostate gland is slightly alkaline. This helps neutralize the acidity of the vaginal tract, prolonging the lifespan of sperm.

5. The seminal vesicles are a pair of glands that secrete a significant proportion of the fluid that ultimately becomes semen. This fluid contains proteins and enzymes, as well as fructose that provides energy for the sperm.

6. The fluids from the prostate gland and seminal vesicles protect the sperm, helping it to survive longer and facilitating successful fertilization.

7. The combined fluids also help to create a medium in which the sperm can move more easily, aiding in their journey to fertilize an egg.