Reproductive Lecture MALE Flashcards
Gonads in males
Testes
Testes (primary male sex organ) secretes?
androgen hormone (testosterone)
Organ sperm are produced in?
Testes
Seminiferous tubules
site of sperm production
Interstitial (Leydig) Cells
produce testosterone
Sustentactular (sertoli) Cells
Nourish sperm
Form barriers preventing immune attacks
Follicle Stimulating Hormone (FSH)- release androgen-binding protein(ABP)
Epididymis
on the back of testes
store sperm until ejaculation
sperm learn how to swim here
Scrotum
sack of skin surrounding testes
muscle in the testes that elevate and lower testes for temperature control
Dartos and cremaster
temperature that testes should be kept at for them to produce sperm?
3 degrees cooler than normal body temperature
spermatic cord covers?
nerves, blood vessels, and ductus deferens
Corpus Spongiosum
penile(spongy) surrounding urethra
transport sperm and semen during ejaculation
Corpus Cavernosa
paired erectile bodies that fill with blood during ejaculation
Prepuce
foreskin covers glans penis, removed during circumcision
Ductus Deferens
Attaches to epididymis
conveys sperm to urethra
Vasectomy
severs ductus deferens preventing sperm from leaving scrotum
where does ductus deferens join urethra?
ejaculatory duct
Seminal Vesicle
produces 60-70% of semen
secretion in seminal vesicle that nourishes sperm
fructose
What organs make ejaculatory duct?
ductus deferens and seminal vesicle
secretion in seminal vesicle that stimulate cervix
prostaglandins
Prostate Gland location
below the bladder
Prostate gland produces how much semen?
20-30%
secretions of prostate gland
citrate- nourishment for sperm
prostate specific antigen(PSA)- liquify semen after ejaculation
Bulbourethral Gland produces how much semen?
10% of semen
Secretion functions of bulbourethral gland
coat and lubricate urethra during intercourse
Urethra job in males
conveys urine and semen
three regions of the urethra
Prostatic urethra
Membranous urethra
Penile urethra
Prostatic urethra
within prostate gland
Membranous urethra
within pelvic diaphragm muscle
Penile (spongy) urethra
within corpus spongiosum of penis
Semen
roughly 250-500 million sperm
contains semen and sperm
semen released during ejaculation is called?
ejaculate
Follicle Stimulating Hormone (FSH)
trigger sustentacular cells to release androgen-binding protein(ABP) - binds to testosterone
Luteinizing Hormone(LH)
Triggers interstitial cells to release testosterone
Testosterone stimulates?
growth after puberty
muscle growth
RBC
libido(sex drive)
Speratogenesis
production of sperm within seminiferous tubules of testes
begins at puberty
most cell division occur via?
Mitosis
cell division in spermatogenesis occurs via?
Meiosis
haploid
cells containing 1 copy of each chromosone
arousal is triggered by?
Parasympathetic nervous system
Ejaculation triggered by?
Sympathetic reflex
