Male Reproductive System Flashcards
(26 cards)
main purposes
make sperm: male gamete, genetic information
transportation system: testis, series of ducts
deposit system: deposit sperm into the female system
produce male hormones: testosterone (t4)
seminal vesicle
produce the majority of fluid that makes up semen
(semen = seminal plasma (98%) and sperm (2%)
ejaculatory duct
delivers sperm into the urethra
rectum
behind seminal vesicle
bladder
above prostate
prostate
produce the fluid that nourishes and transports sperm (seminal fluid)
vas deferens
transports sperm to the urethra in preparation for ejaculation
urethra
tube in the penis, urine, pre-cum which clears our tract prior to ejaculation
erectile tissue
allows the penis to become hard during erection
penis
root, shaft, glans
glans penis
tip of the penis, the most sensitive
prepuce/foreskin
protects the head of the penis
testis
makes sperm and produces testosterone
scrotum
protects testes, helps thermoregulation, keeps them several degrees below the average body temperature which is important for sperm production
epididymis
transport sperm from rete testes to the vas deferens, sperm storage and maturation
bulbourethra/ cowper’s gland
produces precum, neutralize traces of acidic urine in the urethra
sertoli cells
nurse cells for sperm
spermatogenesis
64 days,
spermatogonial stem cell
spermatogonium
primary spermatocyte
Meiosis I
secondary spermatocyte
Meiosis II
Early spermatid
sperm cell
spermatosoa
tail/flagella, head (mitochondria in neck for power)
head of sperm
nucleus, highly condensed DNA, acrosome (enzyme)
penis consists of
skin, collagen
3 tubes
corpus cavernosum
corpus spongiosum
urethra
thermoregulation
testis outside of the body
2-3 degrees below body temp is best for spermatogenesis
cremaster muscle
raises testicles
Production of testosterone
in testes, lydis cells makes t4
support sperm production
muscle growth
increase libido
