Veterinary anatomy: female urethra Flashcards
Female urethra
urethra feminina
external urethral orifice
ostium urethrae externum
Describe the passage of the female urethra from bladder to ostium urethrae externum.
runs from the internal urethral orifice caudally on the pelvic floor below the reproductive tract to the external urethral orifice
It passes obliquely through the vaginal wall and opens at the boundary of vagina and vestibule.
Describe the mare urethra.
especially short (6 cm) and wide
Female urethra length for bo, small ru and car?
bo 10…12 cm
small Ru 4…6 cm
few cm in Car
Unique feature of the female canine urethra?
it opens on a tubercle
Unique feature of the female ru and su urethras?
opens together with a suburethral diverticulum
internal urethral orifice &
external urethral orifice
ostium urethrae internum
ostium urethrae externum
Translate urethral crest and where does it run?
crista urethralis
through the urethra mediodorsally
What 4 layers does the urethra consist of?
loose adventitial layer,
muscular,
submucosal,
mucosal layer
urethral submucosa contains?
elastic fibers
erectile cavernous tissue
plexus of venous sinuses
and spongy layer
urethral spongy layer?
stratum spongiosum
What maintains tonic contractions of the internal urethral muscle?
the sympathetic nervous system
What relaxes the internal sphincter muscle during micturition?
the parasympathetic nervous system
external urethral sphincter made up of?
striated urethral muscle (m. urethralis), which completely encircles the caudal urethra
