The diagram to the right shows the parts of the uterus of a sow.
|Point (don't click) on the animals in the list below.
Notice the similarities and differences in domestic animals:
|In the fundus and body of the uterus, the wall is
divided into the
These are terms specific to the uterus that apply to the typical tunics of a tubular organ.
Click on the image at the right to view the labeled histological images.
|The 4 images show the histological
details of the tunics of the uterus.
The endometrium comprises the tunica mucosa and the tunica submucosa of the uterus.
In the tunica mucosa the lamina epithelialis is usually simple columnar except in the sow and ruminants where it may be pseudostratified columnar.
The lamina propria consists of loose connective tissue full of neutrophils and lymphocytes. It blends with the underlying tunica submucosa since there is no lamina muscularis mucosae in the entire female reproductive tract.
Uterine glands are simple or branched tubular glands located in the lamina propria-tunica submucosa. Some regions of the endometrium in ruminants are void of glands and are highly vascular. It is in these regions, called caruncles, that contacts between the uterus and the extraembryonic membranes are made.
Click on the image below to view the histological images.
|The myometrium is the tunica muscularis of the uterus. It is composed of a thick inner circular layer and a thinner outer longitudinal layer of smooth muscle. The region in between the two layers of smooth muscle contains large blood vessels.||The perimetrium is the tunica serosa of the uterus. It has the typical composition of loose connective tissue, but contains a large number of lymphatic vessels.|
|The stratum vasculare is a
layer of large blood vessels located between the inner and outer layers of smooth muscle
of the myometrium.
In the sow the stratum vasculare is indistinct and in the cow it may be located in the outer half of the circular muscle layer.
Click on the image at the right to view the histological images.
In the bitch, queen, and mare the epithelium of the tunica mucosa
is simple cuboidal or columnar.
Uterine glands may be coiled in ruminants, the sow, and the mare.
Uterine glands are simple or branched tubular glands, and may be coiled distally. Distal portions of the glands are in the lamina propria/tunica submucosa. The glands secrete mucus, glycogen, proteins, and lipids. The remainder of the endometrial tissue is loose connective tissue.
Click on the image at the right to view histological images at 2 magnification levels.
Histology home Female Reproduction index
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This page was last updated 10/19/07 09:53:56 AM