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98 Cards in this Set

  • Front
  • Back
foreskin covers ___
glans
another name for foreskin
prepuce
3 erectile structures in penis
corpora cavernosa, corpus spongiosum, suspensory ligament
what diverges to form 2 crura?
corpora cavernosa
what erectile structure extends from shaft into glans
corpus spongiosum
which erectile structure surrounds the urethra
corpus spongiosum
what erectile structure provides most of the erectile capacity?
corpora cavernosa
what does the suspensory ligament attach?
root to pubic symphysis
opening of urethra called
urethral meatus
2 sensitive areas of penis
corona and frenulum
rim of glans
corona
loose skin between glans and shaft
frenulum
vas deferns passes over ______
pubic symphysis
sperm made in ____
testes
sperm stored and matured in ______
epididymis
_____ carries sperm out of penis
vas deferens
what is cut in vasectomy
vas deferens
seminal vesicle
sac for semen
surrounds urethra
prostate gland
prostate gland secretes
fluid that contributes to semen
bulb of penis made up of _____
muscles
2 muscles associated with root of penis, assist in erection and ejaculation
Bulbospongiosus (bulbocavernosus) and ischiocavernosus muscles
Skin/muscle (from abdominal muscle in front of abdomen) around testes
scrotum
Regulates temperature of testes with sweat glands
scrotum
scrotum contains...
testicles
2 functions of testes
secrete sex hormones, manufacture sperm
lifeline of testes
spermatic cord
Connects testes with organ systems in abdominal cavity
spermatic cord
Has layer of striated muscle that regulates temp of testes
spermatic cord
striated muscle in spermatic cord
cremaster muscle
within spermatic cord is
vas deferens
vas deferens carries mature sperm away from
epididymis
Fine, convoluted tubes where sperm are produced
seminiferous tubules
spermatogenesis involves _____
meiosis
meiosis: chromosomes are _____ from _____(diploid) to ____ (haploid)
halved, 46, 23
sperm develop while embedded in _______
sertoli cells
sertoli cells line
seminiferous tubules
Spaces between seminiferous tubules occupied by _____
leydig cells
sertoli cells produce
peptide hormones
leydig cells produce
steroid and peptide hormones
vas deferens changes name to ____ when ____
ejaculatory duct when it passes seminal vesicle
storage reservoirs for mature sperm
Vas deferens and epididymis
seminal plasma made by ____(%) and ____(%)
prostate gland (30%), seminal vesicles (70%)
what contributes to pre-ejaculate?
bulbourethral glands
what is cut in penis enlargement surgery?
suspensory ligament
body of sperm
acrosome
3 parts of sperm
acrosome, flagellum, midpiece
2 parts of ans
sympathetic, parasympathetic
SNS and PNS are part of
autonomic NS
facilitates ejaculation
SNS
facilitates erection
PNS
releases norepinpherine
SNS
releases acetylcholine.
PNS
active during times of relaxation, calm, safety
PNS
fight or flight
SNS
nerve pathways in erection
SNS, PNS
regulates all aspects of sexual function and hormone release
hypothalamus
activates penile erection during REM sleep
locus coerules
sends axons down the spinal cord to release serotonin to inhibit erection
Paragigntocellular nucleus
____ in the spinal cord will inhibit erection
serotonin
may increase spinal serotonin release, inhibiting erection
SSRIs
sympathetic activity high in
flaccid
constricting arterioles
flaccid
contracting trabecular walls
flaccid
Blood readily exits the sinusoids
flaccid
pressure within the corpus cavernosum is low
flaccid
Parasympathetic fibers release acetylcholine
erect
VIP and nitric oxide gas
erect
Arterioles open, letting blood in
erect
smooth muscle relaxes, collapsing veins
erect
Nitric oxide increases level of cyclic GMP (cGMP) in smooth muscle
erect
blood flows into sinusoid
erect
viagra inhibits an enzyme that breaks down _____
cGMP
Nitric oxide increases level of _____ in smooth muscle
cyclic GMP
3 things that get larger in erection
corpora cavernosa, corpus spongiosum, sinusoids
Sperm pass through ______ and enter epididymis, then into _______, through spermatic cord into ______, past bladder, down ______, secretions from seminal vesicle added, through _____ and out
rete testis, vas deferens, abdomen, prostrate, urethra
Sperm pass through rete testis and enter ______, then into vas deferens, through ______ into abdomen, past _____, down prostate, secretions from ______ added, through urethra and out
epididymus, spermatic cord, bladder, seminal vesicle
what contracts rhythmically in ejaculation
urethra, pelvic muscles
____ muscles aid ejaculation
striated
2 muscles aiding ejaculating
bulbocavernosus, ischiocavernosus
what innervates muscles aiding ejaculation?
pudendal nerve
vasocongestion
engorged with blood
production of vaginal lubrication
transudation
promotes vasocongestion
PNS
relaxation of vaginal walls promoted by
NO
transudation promoted by
VIP
relaxation of vaginal walls inhibited by
SNS
transudation inhibited by
SNS
Dyspareunia
tight, contracting vagina caused by nervousness
human seual response pattern
excitement, plateau, orgasm, resolution
Coolidge effect
Less time to ejaculate with different females than same female in sheep
hormone
A chemical made in one part of the body, released into bloodstream, where it reaches another part of the body and has an effect there
allomones
across species (flowers to bees)
secrete hormone(s) inside the body
endocrine glands
5 endocrine glands
pituitary, thyroid, adrenal, pancreas, gonads
Controls all endocrine glands in body
pituitary
dangles from, controlled by hypothalamus
pituitary
in erect penis, parasympathetic fibers release (3 things)
acetylcholine, VIP, nitric oxide gas