MALE REPRODUCTIVE SYSTEM

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MALE REPRODUCTIVE SYSTEM
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Why is the male reproductive system so important?

• Major Functions
• Production of sperm
• Delivery of sperm to female

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Production of sperm

• Where are sperm produced?
• Testes
• Seminiferous tubules
• Meiosis
• 100 million/day

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Structure of mature sperm

• Haploid DNA (head)
• 23 chromosomes
• Flagellum
• Mitochondria energy to swim

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Structures

• Epididymis
• Maturation
• Storage

• Vas deferens
• tubes that carry sperm
• sterilization procedure

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Glands

• Seminal vesicles
• Fructose solution (energy)
• Prostate gland
• pH buffer alkaline
• Protect sperm from acidity of vagina
• Bulbourethral gland (cowpers gland)
• pH buffer alkaline fluid
• Protect sperm from acidity of male urethra
• Semen sperm fluids

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Pathway of sperm travel

• Sperm from testes
• Stored in epididymis
• Vas deferens to urethra
• Leave through urethra through penis

http//www.24dr.com/reference/pictures/repro_male.
htm
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Structures once again.

• Urethra
• Common duct urine and semen
• Through length of penis
• Penis
• erectile tissue
• Foreskin
• copulation (sex)
• Scrotum
• temperature regulation
• cremaster reflex

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Hormone Control

• Luteinizing hormone (LH)
• Follicle-stimulating hormone (FSH)
• Testosterone
• 1) sperm production
• 2 sex characteristics
• a.) made in interstitial cells

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http//www.mhhe.com/socscience/sex/common/ibank/se
t-3.htm
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