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Oestrous Cycle - Anatomy & Physiology (view source)
Revision as of 13:12, 10 September 2008
, 13:12, 10 September 2008→Cyclic Changes in the Uterus
=== Cyclic Changes in the Uterus ===
=== Cyclic Changes in the Uterus ===
* Oestrus:
** Uterus is congested
** Endometrium contains oedematous fluid, which causes its surface to glisten.
** Muscularis is contractile, so when palpated per rectum, the uterus feels turgid and the horns feel erect and coiled.
*** Tonicity is present the day before and the day after oestrus, but is at its maximum during heat.
** Marked increase in vascularity
* 24-48 hours postoestrus:
** Uterine caruncles show petechial haemorrhage. This gives rise to the discharge of blood from the vagina.
*** In heifers, there is also often perimetral subserous petechiae.
* Dioestrus:
** Endometrium is covered with scanty secretion from the uterine glands.
=== Cyclic Changes in the Ovaries ===
=== Cyclic Changes in the Ovaries ===