What is the thickness of the endometrium during ovulation?

What is ovulation? This is something that only happens to women. What is the endometrium during ovulation? In fact, it is the endometrium. During ovulation, the endometrium is different from usual. The endometrium at this time is thinner than usual, but the difference is not very large. So, what is the thickness of the endometrium during ovulation? How much is normal?

What is the thickness of the endometrium during ovulation ? The thickness of normal endometrium is about 8mm. On the 15th to 28th day of menstruation, the endometrium is 5-7mm thick. The thickest endometrium during ovulation can reach 8mm-10mm. Since the thickness of the endometrium varies with the menstrual cycle, women should also understand the thickness of the endometrium during other periods. 1. Proliferative Phase

??? Ultrasound manifestations of the endometrium: In the early stage of hyperplasia, the endometrium appears as a thin echo line, about 4-6mm thick. In the middle stage of hyperplasia, the endometrium gradually shows three strong echo lines, and the low echo area in between is two layers of functional endometrium with a thickness of about 8-10mm. In the late stage of hyperplasia, the three lines and two zones are more clearly visible, and the thickness of the endometrium increases to about 9-10 mm.

2. Secretory phase : After the corpus luteum is formed, the endometrium shows a secretory reaction under the action of progesterone. The secretory phase is also divided into three stages: early, middle and late. 1. Early secretory phase: Day 15-19 of the menstrual cycle. During this stage, the endometrial glands are longer and more curved. Small vesicles containing glycogen begin to appear under the nuclei of glandular epithelial cells, called subnuclear vacuoles, which are histological features of the early stage of secretion.

2. Mid-secretory phase: Day 20-23 of the menstrual cycle. The inner membrane is thicker and more serrated than before. The apical cell membrane of the secretory epithelial cells in the gland ruptures, and the glycogen in the cells is discharged into the glandular cavity, which is called apocrine secretion. During this period, the interstitial tissue is highly edematous and loose, and the spiral arterioles proliferate and curl.

3. Late secretory phase: 24th to 28th day of the menstrual cycle. This period is the pre-menstrual period. The endometrium becomes thickened and spongy. The openings of the endometrial glands face the organ cavity, with secretions such as glycogen overflowing, the stroma becoming looser and more edematous, and the stroma under the surface epithelial cells differentiate into hypertrophic decidual-like cells. During this stage, the spiral arterioles grow rapidly beyond the thickness of the intima, become more curved, and the vascular lumen expands. In the late secretory phase, the thickness of the endometrium is about 5 to 6 mm.

3. Menstrual period

Days 1 to 4 of the menstrual cycle. At this time, the levels of estrogen and progesterone decrease, activating the synthesis of prostaglandins in the endometrium. Prostaglandins can stimulate the contraction of the uterine muscle layer and cause continuous spasm of the spiral arterioles in the functional layer of the endometrium, resulting in a decrease in endometrial blood flow. The area of ​​damaged, ischemic, and necrotic tissue gradually expands. Tissue degeneration and necrosis, increased permeability of the blood vessel wall, and rupture of the blood vessels lead to the formation of hematoma at the bottom of the intima, which promotes tissue necrosis and exfoliation. The degenerated and necrotic endometrium mixes with blood and is discharged to form menstrual blood. The thickness of the endometrium can reach 8-10mm.

The above has explained in detail the thickness of the endometrium during ovulation and the normal thickness of the endometrium during ovulation. Although this question is not something that every woman will understand, it is something that should be understood. It is better to know more than nothing. Knowing more about this knowledge will come in handy.