Follicle size and endometrial thickness

Sexual enlightenment education should not be avoided. We should include sexual enlightenment education in the whole process of cultural education. In our physiology or environmental health courses, we need to talk about the composition of sperm and eggs, so that we can better master the professional knowledge in these areas. So does everyone know the standard value of egg cell size? So what is the normal range? Let’s take a look at it together below, and hope it will be helpful to everyone.

Follicle size and endometrial thickness

Adult women have one ovary ovulating every month. The fully developed egg can usually reach a size of 18mm before ovulation, which can meet the needs of fertilization in terms of shape and is a mature follicle. The thickness of the uterine wall changes with the fluctuation of the estrogen level during a woman's menstrual period. The normal range should be between 5mm and 10mm. The thickness of the endometrium during ovulation is about 7~8mm. The uterine wall can achieve this thickness without affecting the implantation of the embryo.

Only when a perfect egg cell meets a male sperm can a test tube embryo be produced and a small life be nurtured. Generally speaking, a girl's ovulation period is about 14 days before the next menstrual period. Only at this time can we see the developing egg cells under an optical microscope.

The ovulation period varies from person to person. Some ovulate when the egg grows to 15mm, while others need it to grow to 25mm. Uterine development is a continuous process, and the normal egg diameter should be between 18-25mm.

The development from primary and intermediate eggs to mature follicles can be divided into 8 levels. It takes a total of 10 days from the growth of the 6th level egg to the 8th level egg, which happens to be the follicular stage in a physiological cycle. Starting from 16mm, after another 2-3 days, it will grow into a 20mm egg and be released.

How many eggs are needed for pregnancy? Under normal circumstances, the uterus develops to 1.8-2.5cm, which is within the normal range. If the uterus is immature or fully developed but cannot be expelled, pregnancy is not possible. Most of the characteristics of these mature follicles can be detected through B-ultrasound.

Based on the latest scientific research and statistical analysis, the following results were obtained: the largest egg appears on the 10th to 16th day of the menstrual period, the egg is 20mm in diameter, round in shape, with thin walls, protruding toward one side of the uterus and ovary, and has good internal sound permeability. Ovulation usually occurs within 10 hours. A woman's ovulation period is mostly between the 12th and 18th day of the menstrual period, and rarely can be between 20th and 30th days.