Male reproductive system

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Lily

Cards (49)

the male reproductive system in made up of:
testes
epididymes
vas deferens
prostate
bulbo-urethral gland
urethra
penis
prepuce
what is the function of the male reproductive system (4)
production of sperm
storage of sperm
nourishment of sperm
transport of sperm into the female genital tract
where do the testes develop in mammals
in the abdominal cavity just behind the kidneys
during development of the foetus, where does the the band of tissue attach to?
attached to one end of the testes and the other end to the scrotal sac
as a developing foetus, what contracts to pull the testes through the inguinal ring into the scrotum
scrotal sac
during testicular development, blood vessels and deferent duct become wrapped in what
tunica vaginalis
when should the testes be palpable in the scrotum
12 weeks
what is cryptorchidism  
when the testes fail to descend
what is monorchidism  
one testis is retained
what is bilateral cryptochism
both testes are retained
do testes that do not descend produce live sperm  
no
what are testis  
the male gonad
what is a gonad
the main area for hormone production
what are the functions of the testis (3)
spermatogenesis
production of seminal fluid
secretion of testosterone
why are the testes in adult animals on the outside of the body
spermatogenesis is more efficient below core body temperature
what is found in the walls of the scrotum
dartos muscle
what is the function of the dartos muscle
contracts in the cold weather so testes are closer to the body to help maintain the temperature for spermatogenesis
what are the name of the small ducts in which sperm leave the testis
efferent ducts
where do the efferent ducts carry sperm to
the epididymis
what is the epididymis
larger, coiled duct that lies alongside the testis in the scrotum
where is the temperature lowest
cauda epididymis (tail)
where is the sperm stored and maturity begins
cauda epididymis
what does the epididymis continue as
the vas deferens
where is the vas deferens found
the spermatic cord
what is the role of the vas deferens
carries sperm from epididymis to urethra
where do sperm mature
in deferent duct
what does accessory gland produce
seminal fluid
what is the function of seminal fluid
increases volume of the ejaculate to help passage of sperm to female tract
aids sperm survival
neutralises the acidity of the urine in the urethra
where is the prostate gland found in dogs
below neck of bladder, surrounding the urethra
where is the prostate gland found in cats
short preprostatic urethra
which animal only is bulbo-urethral glands found
tomcats
what is the function of bulbo-urethral glands
contribute to the seminal fluid
where do the blood vessels, nerves and ducts runs from in the spermatic cord
scrotum through inguinal ring into abdomen
where is the cremaster muscle located
in spermatic cord
what is the function of cremaster muscle
allows raising and lowering of testes within scrotum
what is the main blood supply to the testes
testicular artery
where is the testicular arteries found
enters scrotum, runs alongside the epididymis and forms convoluted pampiniform plexus
what do the convolutions in the testicular artery allow for  
blood to cool before entering testicular tissue
what is the function of the penis
conveys sperm and seminal fluid into female reproductive system
conveys urine from the bladder out of the body via the urethra
where is the os penis positioned in dogs
lies dorsally to the urethra