Male Reproductive System

1
Male Reproductive System

• Functions of the Male Reproductive System
• Produce Sperm
• Transport sperm into the body of the female
• Produce male sex hormone testosterone

2
External Structures

• Penis
• Incase urethra
• Scrotum
• Incase testes
• Control temperature of testes

3
Internal Structures

• Testes
• Make Sperm
• 50,000 sperm every minute
• Produce the male sex hormone testosterone
• Testosterone is necessary for sperm production
  and development of the male sex characteristics.

4
Internal Structures

• Epididymis
• Sperm are stored and mature here
• Vas Deferens
• Tubes that lead to the urethra
• Sperm travel through here

5
Internal Structures Continued

• Seminal Vesicle
• Supplies fluid to sperm
• Nourishes sperm
• Prostate Gland
• Supplies fluid to protect the sperm

6
Internal Structures Continued

• Cowpers Gland
• Supplies fluid to sperm to help with mobility
• Urethra
• Sperm travel through here and out the end of the
  penis
• Urine flows through here and out the end of the
  penis

7
Vocabulary Words

• Erection
• Sexual excitement engorges penis with blood
• Causes erection
• Sperm Structure
• Composed of a head and tail
• Head contains genetic information
• XY chromosomes, 23 chromosomes

8
Vocabulary WordsContinued

• Ejaculation
• The process by which semen leaves the males body
• Contractions occur around the urethra and base of
  the penis
• Contractions move sperm out of body
• 1 ejaculation 40-400 million sperm
• Nocturnal emission, wet dreams

9
Vocabulary WordsContinued

• Circumcision
• Optional procedure
• Fold of skin called foreskin is cut around the
  tip of the penis and removed
• Occurs when male is 2-8 days old
• Uncircumcised
• Must wash beneath foreskin to prevent infection