anatomy of male reproductive system
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THE MALE REPRODUCTIVE SYSTEM
consists of a number of sex organs that are part of
the human reproductive process
located outside a mans body, around the pelvic
region
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DEVELOPMENT OF THE MALE REPRODUCTIVE SYSTEM
At puberty
the testes and scrotum enlarge and becomes active
the external genitalia enlarges
seminal vesicles and prostate gland grow
the capacity to ejaculate develops
change in height and weight occur
deepening of voice
hair in armpits, face, chest, abdomen, limbs and in
the pubic area develops
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THE MALE REPRODUCTIVE ORGANS
External organs
Penis- male excretory and copulatory organ
Scrotum- pouch of skin
which holds and protects
the testes
- keeps the testes at
a temperature slightly
lower than the rest of the body
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THE MALE REPRODUCTIVE ORGANS
Internal organs
Testes- or testicles are male gonads, produce
testosterone and produce sperm
Cross section of a rabbit testes
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THE MALE REPRODUCTIVE ORGANS
Internal organs
Epididymis- coiled tubes near the testes where
sperm matures
Vas Deferens- tube that connects the epididymis tothe urethra; carries the mature sperm cells
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THE MALE REPRODUCTIVE ORGANS
Internal organs
Seminiferous Tubules-coiled duct within the
testes that make and transport sperm
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THE MALE REPRODUCTIVE ORGANS
Internal organs
Ejaculatory duct- passage of semen going to the
penis
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THE MALE REPRODUCTIVE ORGANS
Internal organs
Urethra- tubes that both carry
urine and semen
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THE MALE REPRODUCTIVE ORGANS
Internal organs
Accessory glands
Seminal Vesicle- sac like structure at the base of
the vas deferens; it secretes fluid that adds to
seminal fluid
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THE MALE REPRODUCTIVE ORGANS
Internal organs
Accessory glands
Prostate Gland- gland at the base of the bladder;
secretes fluid that adds to seminal fluid
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THE MALE REPRODUCTIVE ORGANS
Internal organs
Accessory glands
Bulbourethral glands- or Cowper gland; produces
the pre-ejaculate
Cowper
gland
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HOW DOES THE MALE REPRODUCTIVE SYSTEM
FUNCTION? The male reproductive system depends on hormones. Hormones are the
chemicals that regulate or stimulate body functions. The main hormonesin the proper functioning of the male reproductive system are the follicle-stimulating hormone (FSH), luteinizing hormone (LH), and thetestosterone.
The follicle-stimulating hormone (FSH) and the luteinizing hormone(LH) are produced by the brain, specifically by its pituitary gland whichis located at the base of the brain. FSH is important for the production ofthe sperm cells or the process called spermatogenesis. The LH isresponsible of the stimulation of the production of the testosterone. Thisis necessary to continue the process of spermatogenesis. Testosterone,upon the other hand, is necessary in the development of malecharacteristics. Some examples of male characteristics are muscle mass,strength, fat distribution, bone mass, and sex drive.