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A&P II: Reproductive

Mod 6

4 duct that serve as passageways for sperm: epididymus, ejaculatory duct, ductus deferens, & urethra
external male genitalia penis & scrotum
male gonads that produce male sperm and male sex hormone testes
part of testes where sperm are produced seminiferous tubules
cells that produce testosterone Leydig
cells that support spermatogenesis, providing sperm nutrition and secreting inhibin and androgen-binding protein Sertoli
where do testes develop in the male fetus? near the kidneys
when testes descend during embryologic development from near the kidneys to the scrotum, what do they pass through? inguinal canals
why is complete descent of the testes necessary for normal sperm development? too hot in body for sperm
spermatic cord contain: ductus deferens, testicular artery, veins, autonomic nerves, lymphatic vessels and cremaster muscle
structure supporting the male reproductive system formed when testes descend from the posterior abdomen spermatic cord
Highly coiled tube located in the scrotum, site of final sperm maturation. epididymus
ductus (vans)deferens, ejaculatory duct, epididymus are all paired/unpaired passageways paired
The ________ ____ passes through the prostate in males. ejaculatory duct
vasectomy site ductus deferens
seminiferous tubules -> epididymus -> vas deferens -> urethra
sperm cells + seminal fluid = semen
paired glands: bulbourethral glands and seminal vesicles
male sex gland that secretes mucus bulbourethral gland
seminal vesicle empty into/come from the ejaculatory duct empty into
bulbourethral glands and seminal vesicles secrete alkaline fluid
glands add scretions to semen: seminal vesicles -> bulbourethral glands
circumcision removes the (foreskin) prepuce
male erection stimulus receptors skin around and on the genitals
male erection central integration center sacral spinal cord
male erection efferent pathway parasympathetic fibers release nitrous oxide (NO)
male erection effector and reflex response smooth muscles relax which dilates blood vessels
primarily a vascular response in penis (parasympathetic NS) erection
primarily a muscular response in penis (sympathetic NS) ejaculation
cytoplasmic changes that make structurally mature sperm cells; conversion of sprematids to spermatozoa spermiogenesis
mature sperm spermatozoa
46 to 23 meiosis
secondary spermatocytes and ________ have 23 chromosomes by meiosis spermatids
stem cells spermatogonia
LH stimulates _________ production testosterone
anabolic steriods act like/inhibit testosterone act like
Created by: MKC