Semen

Definition

Semen is the fluid that is ejaculated from the male reproductive tract during orgasm. It contains sperm cells and various secretions from the male reproductive glands.

5 Must Know Facts For Your Next Test

1. Semen is produced by the testes, seminal vesicles, prostate gland, and bulbourethral glands.
2. The average volume of semen per ejaculation is about 2-5 milliliters.
3. Semen contains enzymes, fructose, and other substances to support and protect sperm.
4. The pH level of semen is slightly alkaline, which helps neutralize the acidic environment of the female vagina.
5. Sperm cells within semen are responsible for fertilizing the female egg during reproduction.

Review Questions

• What are the primary glands involved in the production of semen?
• How does the pH level of semen contribute to its function in reproduction?
• What key components within semen support and protect sperm cells?

Related terms

Spermatozoa: The male reproductive cells contained within semen that are capable of fertilizing an egg.

Seminal Vesicles: Glands that produce a significant portion of the fluid that makes up semen.

Prostate Gland: A gland located below the bladder that contributes additional fluid to semen to aid in sperm mobility and longevity.