Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
28 Cards in this Set
- Front
- Back
|
testes
|
A pair of oval structures in the scrotum
|
|
|
scrotum
|
sac-likestructure which contains the testes and epididymis
|
|
|
Cryptorchidism
|
failure of the testes to descend into thescrotum
|
|
|
Spermproduction requires temperature ______ below body core temperature
|
2-3 C
|
|
|
function of testes
|
–Spermatogenesis(sperm production)
–Productionof androgens (male sex hormones) |
|
|
structure of testes
|
Partitionedinto compartments containing seminiferous tubules
|
|
|
Leydig(interstitial) cells
|
•Locatedoutside of the seminiferous tubules•Produceandrogens (testosterone)
|
|
|
Sertolicells
|
•Locatedwithin the seminiferous tubules•Support,nourish, protect developing sperm cells
•Producefluid for sperm transport •Forma blood-testes barrier which protects sperm from the male immune system |
|
|
Spermatogonia
|
•Locatedwithin the seminiferous tubules
•Stemcells programmed to divide –Onedaughter cell becomes a replacement spermatogonia –Theother cell starts down the pathway of spermatogenesis and develops into spermcellsate |
|
|
Spermatogenesis
|
-Occurs in the seminiferous tubules
•A continuous process beginning at pubertyand continuing until past age 70 •Takes about 10 weeks •Regulated hormonally |
|
|
Structureof a Spermatozoa
|
3 parts: head, middle, tail
|
|
|
Tubularstructure (passageway for sperm) consists of..
|
–Epididymis
–Vas(ductus) deferens –Ejaculatoryduct –Urethra |
|
|
Epididymis
|
-Coiledtubular structures adjacent to the testes –Spermcomplete functional maturation
–Storessperm |
|
|
Vas (ductus) deferens
|
–Musculartube extends from the epididymis to the ejaculatory duct
–Storessperm (can remain viable formonths) –Peristalticcontractions move sperm and fluid toward the ejaculatory duct and urethra –Inthe scrotum the vas deferens is within the spermatic cord –Siteof vasectomy (surgical birth control) |
|
|
ejactulatory duct
|
–Formedby the merging of the vas deferens and the duct from the seminal vesicle
–Emptiesinto the urethra at the prostate gland |
|
|
spermatic cord
|
Paired structures in the scrotum
|
|
|
spermatic cord contents
|
–Vasdeferens
–Bloodvessels to the testes and epididymis –Lymphaticvessels to testes and epididymis –Nerves –Cremastermuscle |
|
|
The spermatic cord must be_____to perform a vasectomy. It enters the _____ ______ at theinguinal canal
|
opened, abdominal cavity
|
|
|
urethra
|
•Extends from the urinary bladder to thetip of the penis
•The prostatic urethra is surrounded bythe prostate gland •Serves as a passageway for both theurinary and reproductive systemsa |
|
|
seminal vessels
|
–Pairedstructures posterior to the bladder
–Producemost of fluid in semen |
|
|
components of seminal vessels secretion
|
•Fructose(energy source for sperm)•Prostaglandins(stimulate smooth m. contractions in male and female reproductive tracts
•Fibrinogen(coagulate semen after ejaculation)•Alkaline(neutralize acidity in the vagina) |
|
|
prostate gland
|
–Inferiorto the urinary bladder
–Surroundsthe prostatic urethra –Producesenzymes which liquefy coagulated semen in the vagina and an antibacterialsubstance to fight bacteria –Enlargementdue BPH (benign prostatic hyperplasia) or prostate cancer can constrict theurethra, interfering with urination |
|
|
Cowper’s (bulbourethral) glands
|
–Pairedstructures at the base of the penis
–Secretealkaline mucus to neutralized acidity in the urethra and lubricate the tip ofthe penis |
|
|
the penis contains..
|
the urethra and erectile tissue
|
|
|
Three cylindrical columns of erectiletissue comprise most of the penis
|
–Corpusspongiosum:surrounds the urethra
–Corporacavernosa: 2 columns deep to the anterior surface of thepenists sperm from the male immune system |
|
|
erection
|
Parasympatheticnerves release nitric oxide which dilates penile arteries, increasing bloodflow into spongy erectile tissue, which expands causing erection
|
|
|
prostate cancer screening
|
–Digitalrectal exam (palpation of gland through rectal wall)
–PSA(prostate specific antigen) blood test |
|
|
red?
|
cards?
|
