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The endothelium is relatively thin with little endometrial proliferation or gland development.  This is due to the absence of the ovarian steroids oestradiol and progesterone. The glands are lined by '''simple cuboidal epithelium'''.
 
The endothelium is relatively thin with little endometrial proliferation or gland development.  This is due to the absence of the ovarian steroids oestradiol and progesterone. The glands are lined by '''simple cuboidal epithelium'''.
 
===Innervation===
 
===Innervation===
The uterus is innervated by both sympathetic and parasympathetic fibres, which play a part in the regulation of uterine activity.  
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The uterus is innervated by both sympathetic and parasympathetic fibres, which play a part in the regulation of uterine activity.
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===Vasculature===
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*'''Uterine branch of the Ovarian artery''' supplies the cranial parts of the Uterine horns.
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*'''Uterine artery''' supplies the rest of the uterine horns and the uterine body. This is a branch off the '''External Iliac artery'''. The Uterine artery and the Ovarian artery anastomose within the [[Broad Ligament - Anatomy & Physiology|Broad Ligament]].
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{{Learning
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|videos = [[Video: Dissected equine abdomen showing ovary and uterus|Dissected equine abdomen showing ovary and uterus]]<br>[[Video: Female genital tract from a pregnant mare dissection|Female genital tract from a pregnant mare dissection]]<br>[[Video: Mare ovary and uterus dissection|Mare ovary and uterus dissection]]<br>[[Video: Isolated mare uterus potcast|Isolated mare uterus potcast]]
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}}
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==Vasculature==
 
==Vasculature==
 
*'''Uterine branch of the ovarian artery''' supplies the cranial parts of the uterine horns.
 
*'''Uterine branch of the ovarian artery''' supplies the cranial parts of the uterine horns.
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