During this part of the menstrual cycle, the endometrial glands are lined by columnar epithelium with nuclear pseudostratification, dense chromatin, and variably present small nucleoli. Early proliferative endometrium days 4 to 7 of the menstrual cycle is characterized by thin surface endometrial epithelium and sparse, narrow, straight endometrial glands lined by cells with mild pseudostratification of the nuclei. There are a few mitoses in the epithelium and in the stroma e-Fig. In the midproliferative phase days 8 to 10 of the menstrual cycle , the glands are slightly tortuous and the surface epithelium is columnar; the stroma is edematous and mitoses are present in both the epithelium and the stroma Fig. Mitoses in the epithelium and the stroma become more abundant. The stromal edema disappears Fig.
6.1 Role and functional anatomy of the endometrium
The Normal Endometrium | Basicmedical Key
See Elsevier's new video about their Clinic Review Articles on our homepage or click here. Bennett, M. Page views in 13, Cite this page: Kyle D, Schwartz L. Accessed April 12th, Essential features. Mucosal component endometrium is hormonally responsive and undergoes physiologic and morphologic changes throughout the menstrual cycle.
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The uterus is a hollow muscular organ located in the female pelvis between the urinary bladder and the rectum the lower end of the large bowel. The upper part of the uterus, the fundus, is attached to the fallopian tubes while the lower part is connected to the vagina through the uterine cervix. Functions of the uterus include nurturing the baby, and holding it until the baby is mature enough for birth. The endometrium is hormone-responsive which means it changes in response to hormones released during the menstrual cycle. Following every menstrual period menses the endometrium grows to a thick, blood vessel-rich, glandular tissue layer, providing an optimal environment for a fertilized egg.
The endometrium lines the uterine corpus and displays two chief constituents - the endometrial glands and endometrial stroma. The inactive, prepubertal endometrium shows a cuboidal to low columnar epithelium that lines the surface and the underlying glands. The appearance greatly resembles the inactive endometrium seen in postmenopausal women, as both prepubertal and postmenopausal endometria do not exhibit any proliferative or secretory changes that are hormone dependent. The endometrium in the reproductive female may be considered to comprise of a deeper basal layer and a superficial functional layer. The functional layer is subdivided into two strata - the compactum towards the surface and the spongiosum towards the basalis.