Equine Repro - Comparative Anatomy Flashcards
Describe the equine scrotum
globular, no distinct neck - testes are relatively immobile
oily appearance - sebaceous secretions
Describe the location and orientation of the equine scrotum/testes
ventral to the pubic brim in the inguinal region
ellipsoidal and laterally compressed
long axis = horizontal
Where does the epididymis lie in relation to the testis in the equine species?
dorsal to the testis
Accessory sex glands in the horse
ampulla of the ductus deferens
vesicular glands
body of the prostate
bulbourethral gland
What is the testicular bursa in the horse?
distinct lateral opening of the epididymis
What makes up the ejaculatory duct of the horse?
ducts of vesicular gland
ducts of ductus deferens
Parts of the equine glans penis
corona glandis (raised margin)
collum glandis
fossa glandis
urethral sinus
preputal oriface
preputial ring
What type of penis does the equine species have?
musculocavernous
Describe the location of the equine ovaries
sublumbar L4-L5
NOT within the pelvic cavity
Describe the shape and size of equine ovaries
kidney bean shaped with a medial indentation (ovulation fossa)
largest ovaries in domestic animal species
Describe the internal structure of the equine ovaries
reversed
outer = medulla
inner = cortex
What is the shape of the uterine horns in the mare?
T shape
The uterine body of the mare is considered to be ___ in relation to other domestic species?
the longest
The oviarian artery of the mare does what?
divides into several branches - ramifying on the ovarian surface
Describe the vulva of the mare
rounded ventral commissure
pointed dorsal commissure
What type of glands are present on the dorsolateral and ventral walls of the equine vestibule?
minor vestibular glands
What can effect the topography of the perineum in the equine species?
depends on the fullness of the rectum
Why is it uncommon to see the ischiorectal fossa in the horse?
the region is more muscular
hamstring muscles have a higher point of origin from the sacrum/caudal vertebrae
Describe the ischeal spines and ischeal tuberosities of the horse
flat ischeal spines and ischeal tuberosities
Describe the pelvic inlet of the mare
pelvic inlet is wide and round in the mare
Describe the pelvic floor of the horse
the pelvic floor is flat and almost horizontaal
Describe the long axis of the pelvic cavity of the horse
long axis of the pelvic cavity is almost straight
Describe the sacrotuberous ligament of the horse and it’s relevancy
well developed and broad sacrotuberous ligament
allows the pelvic canal to expand during birth
Are there any undue curvatures in the equine pelvis
NO
Describe the pelvic exit of the horse
the pelvic exit is free
