Male Reproductive System

What is the male reproductive organ

testes

what do the testes do

produce male gamete (sperm) and male sex hormone (testosterone)

Cryptorchid

failure of one or both testes to descend

Functional layer of the testes

parenchyma

cells that produce testosterone

leydig cells

function of the tunica vaginalis and tunica albuginea testis

cover the testes

two lobed sac containing the testes

scrotum(regulate testes temp.)

combination of blood vessels, smooth muscles, nerves, etc

spermatic cord(heat exchanger/houses cremaster muscle)

what is crucial in male fertility

temperature control ( too hot= lower sperm fertility)

testes are cooled by what …

evaporating secretions of sweat and sebacous glands, heat transfer from arterial to venous blood, and tunica dartos and creamaster muscles moving the testes closer or away from the body

the spermatic chord is made up of what three things

cremaster muscle, vas deferens, and the pampinform plexus

network of veins that cools arterial blood before it enters the testes that helps temperature regulation

pampinform venous plexus

the first external duct leading from the testes that work sperm transport, concentration, storage, and maturation

epididymis (caput, corpus. cauda)

paired tubes extending from each epididymis to the urethra for sperm transport

vas deferens

single excretory duct extending from the vas deferens to the end of the penis

urethra

secrete contents into urethra to dilute sperm cells, forming semen

assessory glands