The Male Parts Flashcards
(30 cards)
What are the Primary reproductive organs?
Testes (gonads) which produce sperm (gametes)
what are the secondary reproductive organs?
the ducts which transport and store gametes
dartos and cremaster muscle control what
temperature
when do the testes begin descent into scrotum
7th month of fetal development
what is cryptochidism
failure of the testes to descend
which muscle causes wrinkling of skin on scrotum
dartos muscle
muscle that is a continuation of internal abdominal oblique
cremaster muscle
an outpocketing of the peritoneum of testis
tunica vaginalis
extends inward as septa and divides each testicle into a series of mediastinum testis (innermost layer of testicle
tunica albuginea
where is the site of sperm production
seminiferous tubules
what do Sustentacular cells do?
- support and protect developing spermatogenic cells
- provide nourishment to developing sperm
- phagocytize degenerating cells
- control movements of sperm cells and their release into lumen
- secrete inhibin helps regulate sperm production
forms the blood-testis barrier; prevents immune response against antigens produced by sperm
tight junctions
which cell produces the male hormone testosterone
interstitial cells
what is the process in which immature spermatogonia develop into mature spermatozoa known as
spermatogenesis
process by which somatic cells divide; in diploid (2N) state
Mitosis
sex cells divide; in haploid (N) state
meiosis
connection between haploid dughter cells
cytoplasmic bridge
how many sperm are produced per day
300 million
what is the life expectancy of ejaculat in female tract
48 hours
what parts are included in the duct system of the testes
seminiferous tubules, straight tubules, rete testis
what is the function of the efferent duct in the epididymis
transport sperm out of the testes
what is the ductus epididymis function
site of storage
function of ductus deferens
stores sperm and propels them toward urethra during ejaculation
formed by the union of the ducts from the seminal vesicles and ductus deferens ***eject sperm into the prostatic urethra
ejaculatory ducts