Anatomy Final Exam- Male Reproduction Flashcards
Raphe
medial ridge between scrotums (exterior)
ScrotalSeptum
dartos muscle separating two scrotums (interior)
Cremaster Muscle
small bands descending through spermatic cord to surround the testis
Sertoli cells
- form blood-testis barrier
- support, protect, nourish sperm
- get rid of excess spermatid cytoplasm
- control movement of sperm
- control release of sperm
- control production of sperm (inhibin)
(Interstitial) Leydig’s Cells
produce testosterone
Seminiferous Tubules
spermatogenesis
Ejaculatory Duct
- union of seminal vesicle and amulla of vas deferens
- terminate in prostatic urethra where they eject
Three Parts of Male Urethra
- Prostatic
- Membranous
- Spongy
Path of a Sperm
- fluid secreted by sertoli cells creates pressure pushing sperm along lumen of seminiferous tubules into straight tubules
- Straight tubules lead to rete testis to coiled efferent ducts to single ductus epididymis to vas defrens
- degenerated sperm are reabsorbed through stereocilia (high SA)
Epididymus
sperm maturation (14 days)
Ductus (vas) Deferens
- convey sperm during arousal from epididymis to urethra by peristaltic contractions
- store sperm for months
Ampulla
terminal end of vas deferens
Seminal Vesicles
- produce fluid for sperm
- alkaline
- viscous
- fructose
- prostaglandins
- clotting
Purpose of Fructose in Semen
ATP production in sperm
Purpose of Prostaglandins in Semen
sperm motility and viability
-stimulate female orgasm
Purpose of Alkaline in Semen
balances acidic urethra and vagina
Purpose of Clotting Agent in Semen
helps semen coagulate after ejaculation
Prostate
- donut shaped surrounding prostatic urethra
- secretes milky acidic fluid
Use of…. In Prostate Secretion
- Citric Acid
- Proteolytic Enzymes
- Acidic Phosphate
- Seminal Plasmin
- ATP production
- break down clotting protein from seminal vesicle
- unknown
- antibiotic decreasing bacteria in semen and female
Three Layers of Penis
- Corpora Cavernosa
- Corpus Spongiosum
- Skin and Subcutaneous
Corpus Spongiosum
keeps urethra open for ejaculation
Cowper’s Gland (Bulbourethral)
- paired and pea sized below prostate
- secrete alkaline substance and mucus to lubricate penis decreasing damage to sperm during ejaculation
Prostatic Secretion is _____ while Seminal Vesicle and cowper’s Fluid is ____
milky, sticky
