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The Anatomy of the Male Repoductive System
The Anatomy of the Male Repoductive System
Bladder
Bladder
Muscular sac that stores Urine to expel it from body through Urethra via excretion.
Sex Glands
Sex Glands
Gland that secretes fluid containing Nutrients (Fructose) and Mucus with Sperm cells to form Semen.
Sperm Duct
Sperm Duct
Long tube which conducts Sperm from Testes to be mixed with fluids in sex gland (which connects to the Urethra) during ejaculation.
Urethra
Urethra
Tube inside Penis that conducts Sperm/Semen from Sex gland to outside of body via Penis (also convey Urine).
Testis
Testis
Two oval-shaped organs held outside the body by Scrotum (to maintain optimum temperature below core body temeprature) to synthesize Sperm and Tetosterone
Penis
Penis
Passes Urine Out of the Body from the Bladder and Allows Semen to Pass into the Vagina of a Woman during Sexual Intercourse
Male Primary and Secondary Sexual Characteristics
Male Primary and Secondary Sexual Characteristics
Primary sexual characteristics are traits a person is born with that determines their sex.
Secondary sexual characteristics occur at the onset of the puberty and are driven by the onset of hormones.
Primary sexual characteristics are required for sexual reproduction, secondary sexual characteristics are not.
Primary sexual characteristics are the presence of the male reproductive system. For boys the hormone involved in the development of secondary sexual characteristics is testosterone. Examples of the secondary sexual characteristics in males are given below:
- The enlargement of the penis and testes
- Shoulders broaden
- A rapid growth spurt
- Voice deepens due to an enlargement of the larynx (the voice box gets bigger)
- The growth of hair on the body and face.
Sperm
Sperm
Sperm are made in the testes.
Sperm are tiny and produced in huge numbers by the testes.
The Head of the sperm contains the nucleus with the DNA from the father.
The tail helps the sperm swim to the egg.
When traveling through the sperm duct (Vas Deferens) the prostate gland and the seminal vesicle will provide liquid known as seminal fluid to the sperm that will help the sperm travel and give it energy; sperm and seminal fluid together are known as semen.
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