the opening of the uterus is referred to as internal os.
the opening of the uterus is referred to as internal os.
the opening of the uterus is referred to as?
internal os
normally the uterus lies in anteversion & anteflexion. in most women, the long axis of the uterus is bent forward on the long axis of the vagina, against the urinary bladder. this position is referred to as anteversion of the uterus. furthermore, the long axis of the body of the uterus is bent forward at the level of the internal os with the long axis of the cervix. this position is termed anteflexion of the uterus. the uterus assumes an anteverted position in 50% women, a retroverted position in 25% women, and a midposed position in the remaining 25% of women.
uterus
the mare has two ovaries, usually in length and thick, that generally tend to decrease in size as the mare ages. in equine ovaries, unlike in humans, the vascular tissue is cortical to follicular tissue, so ovulation can only occur at an ovulation fossa near the infundibulum. the ovaries connect to the fallopian tubes (oviducts), which serve to move the ovum from the ovary to the uterus. to do so, the oviducts are lined with a layer of cilia, which produce a current that flows toward the uterus. each oviduct attaches to one of the two horns of the uterus, which are approximately in length. these horns attach to the body of the uterus ( long). the equine uterus is bipartite, meaning the two uterine horns fuse into a relatively large uterine body (resembling a shortened bicornuate uterus or a stretched simplex uterus). caudal to the uterus is the cervix, about long, which separates the uterus from the vagina. usually in diameter with longitudinal folds on the interior surface, it can expand to allow the passage of the foal. the vagina of the mare is long, and is quite elastic, allowing it to expand. the vulva is the external opening of the vagina, and consists of the clitoris and two labia. it lies ventral to the rectum. the mare has two mammary glands, which are smaller in maiden mares. they have two ducts each, which open externally.
equine anatomy