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mammal repro male

practicum 1

QuestionAnswer
glans penis function highly innervated, temperature and pressure sensitive to initiate ejaculation, homologous to clitoris
glans penis species differences boar: corkscrew shape ram: urethral process tom: androgen dependent spines alpaca: cartilaginous process
corpus cavernosum large surface area of the penis interior, spongy erectile tissue
corpus spongiosum small surface area surrounding urethral opening, spongy erectile tissue
sigmoid flexure S shaped portion of penis that allows it to be retracted inside the body or extended
retractor penile muscles muscles attached to the sigmoid flexure that allow the penis to retract or expand
vesicular glands paired glands at pelvic urethra bull and boar: contribute large portion of ejaculate stallion: produces opalescent gel for plug
bulbourethral glands paired near ischial arch, function to produce alkaline fluid for pH neutralization
bulbourethral glands in the boar produce opalescent gel portion of ejaculate
prostate gland corpus: bull boar stallion cat dog disseminate: bull boar ram
prostate gland function secretions clean and lubricate urethra, alkaline adjusts urethra to neutral pH of sperm viability
ischiocavernosus muscle around crus penis, contraction to hold blood in penis for erection
bulbospongiosus muscle around crus penis, contracts to empty urethra during ejaculation
spermatic cord holds ductus deferens, testicular artery, PP, cremaster muscle, spermatic fascia, and vaginal tunic functions to suspend testes in scrotum and as a pathway for vasculature, lymph, and nerves
pampiniform plexus black portion of spermatic cord, convoluted testicular vein wrapping around testicular artery functions for countercurrent heat exchange for temperature regulation
cremaster muscle muscle in spermatic cord, functions in movement for fight or flight and blood regulation to the testes
epididymis head no motility or fertility of sperm
epididymis body some motility and fertility, maturation and concentration of sperm
epididymis tail fully motile and fertile, storage of sperm, ejaculation from distal tail
testis testicular capsule, tunica albuginea, parenchyma, mediastinum functions for spermatogenesis and testosterone production
scrotum skin, tunica dartos, fascia, and vaginal tunic functions for temperature regulation of the testes and protection
Created by: r.logan6029
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