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The mouse has a single cervix, which forms the caudal end of the uterus and connects the vagina. The wall of the cervix is composed of, from inside to outside, stratified squamous epithelium covered with mucous cells, lamina propria, circular smooth muscle fibers, and adventitia. Toward the vagina the epithelial lining of the cervix changes into keratinized stratified squamous epithelium.
The 1.25X micrograph is a cross section of the cervix, showing its lumen, the layers constituting the cervix wall, and the nearby vaginal fornices and urethra. The 10X and 20X micrographs present various layers of the cervix wall, the mucous cells, stratified squamous epithelium, and lamina propria, in increasing detail. The 40X micrograph displays the different layers forming the stratified squamous epithelium that lines the cervix toward the vagina.
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