Ch 27 male Flashcards
sperm pathway
- epididymus
- ductus deferns
- ejaculatory duct
- the urethra
accessory sex glands where they empty secretions into the ducts during ejaculation:
seminal glands
prostate
bulbo-urethral glands
Where is sperm made?
the seminiferous tubules
What are the 4 cells of seminiferous tubules
sustenocytes (nourish sperm) spermatogonic cells (sperm forming cells) intersistal endocrhine cells (secretes testerone) myoid cells (smooth muscle like cells, surround seminifours cells)
sperm matures in the
epididymis
During ejaculation the epididymis contracts expelling sperm via
the ductus deferens
Three regions of the urethra
prostatic uerthra intermediate part (membranuous): urogenital diaphragm spongy urethra (via penis, opens at external urethra orifice
The three male accessory glands
seminal, prostate, bulbo urethral glands
the seminal glands produces
viscous alkaline fluid that contains fructose, citric acid, coagulating enzyme and prostoglandins
the seminal glands comprises ____% of sperm, and increases their ____
70, motility (causes fertilization)
Prostate glands scretes
milky, acid fluid that contains citrate, enzymes and prostate specific antigen (PSA)
Prostate glands makes up ___% of sperm and it ____ sperm
30, activates
bulbo urethral glands produce____, to
thick,clear mucus during sexual arousal, lubricate glans penis, neutralizes traces of acidic urine
sperm contains____
fructose for ATP production, protects and activates sperm and facilitates sperm movement
Penis consits of:
- root of penis (in body)
- body of penis
- glans of penis
During erection the penis
fills with blood, causing penis to enlarge, and become rigid
During erection the corpus spongisium
surrounds the urethra and expands to form glans and bulb of penis
the Corpus cavernosa are paired
dorsal erectile bodies
the perineoum is the
diamond shaped region located between the pubic symphysis, coccyx and ischail tuberosities
The testosterone is synthesized from
chlosterol
Testosterone is converted to
dihydrotestosterone (DHT) in prostate and estradiol in brain neurons
Testesterone prompts
spermatogenesis and targets all accessory organs
testosterone has ____ effects on body
anabolic
deficiency of testosterone
leads to atrophy of accessory organs, semen vol declines, erection/ ejaculation are impaired
