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Gonads
REproductive organs
(Ovaries & Testes)
Gametes
Sex cells
Eggs and Sperm
Scrotum
Sac like puch located outside bdy cavity
Temp regulaion. 2 degrees less for health sperm
Cremaster Muscle
Adjusts distance of testes from body.
Gubernaculum Testes
Anchors testes to scrotum
Descent of testes
Testes orginate in abdominopelvic cavity (By kidneys)
Gubernaculum testes
Testes are drawn down through abdominal wall (Inguinal canal
-Vessels nerves and ducts follow
- part of abdominal walll becmes part of scrtum
Takes part of the wall with it
- Cremaster muscle =internal oblique
Cryptorchidism
Hidden testes
Testes do not descend by birth
Mainly in preemies
80% descend spntaneusly by 1 yr
Seminiferous Tubules
1/2 mile long
Testes
Seminiferous Tubules (sperm production)
Sustentacular Cells (aka nurse cells)
Interstitial cells ( between tubules)
Spermatogenesis
Sperm Production
Sustentacular Cells
aka nurse cells
-Nurish and protect sperm
-Form "blood-sperm-barrier"
Interstitial Cells
Between tubules (
secrete testosterone)
- Secondary sex characteristics
- Aid in sperm production
What enlarges and divides at puberty
Seminiferous tubules
Interstitial Cells
Epididymis
Tube on top and back of testes
ABOUT 23 FT LONG
Sperm stored for 2 wks
Sperm Cant move (PSCC & peristaltic movement)
REcycling center (If not ejaculated)
Maturation of sperm occurs in
Epididymis
Ductus Deferens
16-18 inches long
Ascends tgrough
inguinal canal
within
spermatic cord
Travels up & over to back of urinary bladder
Lumen enlarges to form
ampulla
Empties into
ejaculatory duct (
in prostate)
Sperm cant move (PSCC & peristaltic movement
Vasectomy
Cut anf tie off section of ductus defferens to prevent preganacy
Urethra
3 regions
Prostatic
Urethra
Membranous
Urethra
Spongy
( Penile) Uretha
Prstatic Urethra
Through prostate
Membranous Urethra
Through external urethral sphincer
Spongy Urethra
Through erectile tissue of penis
Tubules of male reproductive path:
Seminiferous tubules
Eididymis
Ductus deferens
Ejaculatory duct
(prostatic -> Membranous -> Spongy) urethra
Out
Male Accessory Sex organs
Add secretions to sperm to form organs
Seminal Vesicles
Makes 60% of semen
Fructose for energy
Fibrinogen
to
CLOT
semen
Alkaline to neutralize vaginal secretions
Ptostoglandins-
Reverse peristaltic contractions w/in uterus & tubes.
Prostoglandins
Reverse pristaltic contractions within uterus & tubes
Seminalplasmin
Antibiotic like to prevent UTI's
Prostate
Makes 20-30& of sperm
Seminalplasmin- ANTIBIOTIC
Milkt alkaline secretion
Enlafged Prostate
BEgins to enlarge after 40 yrs
Tightens around urethra
Bulbourethral Glands
Clear mucus secretion
Pre-ejaculate (lubricate glans)
Alkaline to neutralize the urethra of urine
Spongy Urethra
Runs down the middle of corpus spongiosum
Glans Penis
Covered with PREPUCE foreskin
In Penis
Arteries & Veins
Arteries run through erectile tissue
Veins run along dorsal surface
Author
leti5637
ID
154760
Card Set
Male
Description
Male unit 4
Updated
2012-05-19T19:05:43Z
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