Uterus structure and function pdf

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uterus structure and function pdf

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Their position, size, and anatomic relations vary considerably with age and the physiologic changes of menstruation, pregnancy, and menopause. Schema of the female reproductive organs. The uterus varies considerably in size, shape and weight depending on the status of parturition and estrogenic stimulation. The upper part of the uterus above the insertion of the fallopian tubes is called the fundus. The narrow portion situated between corpus and cervix is known as the isthmus and lies approximately at the level of the course of the uterine artery and the internal os of the cervix.

Ovaries: Facts, Function & Disease

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Things occurring in the uterus are described with the term in utero. In the human, the lower end of the uterus, the cervix , opens into the vagina , while the upper end, the fundus, is connected to the fallopian tubes. It is within the uterus that the fetus develops during gestation. In the human embryo , the uterus develops from the paramesonephric ducts which fuse into the single organ known as a simplex uterus. The uterus has different forms in many other animals and in some it exists as two separate uteri known as a duplex uterus.

The first comprehensive description of the external anatomy of the human uterus was made by the Greek physician Soranus of Ephesus in the second century A. For example, it was believed that the cervix had a spongy consistency similar to that of the lungs and served the function of respiration. The theory of a multicompartmentalized uterus with seven chambers was held for centuries, until the anatomy of the uterus became better known when dissection of cadavers became a part of medical practice. Leonardo da Vinci in the 15th century and Vesalius in the 16th century demonstrated that the human uterus had a single cavity lined by decidua and supported by muscular layers. In the 18th century, William Hunter described the gestational uterus including the placenta and the uteroplacental vascular system. Unable to display preview. Download preview PDF.

The Uterus

Ovaries are the female gonads — the primary female reproductive organs. These glands have three important functions: they secrete hormones, they protect the eggs a female is born with and they release eggs for possible fertilization. Human females are typically born with two ovaries stemming from the uterus. Before puberty, ovaries are just long bundles of tissue. As the female matures, so do her ovaries.

These parts are internal; the vagina meets the external organs at the vulva, which includes the labia, clitoris, and urethra. The vagina is attached to the uterus through the cervix, while the uterus is attached to the ovaries via the fallopian tubes. At certain intervals, the ovaries release an ovum, which passes through the fallopian tube into the uterus. If, in this transit, it meets with sperm, the sperm penetrates and merges with the egg, fertilizing it. The fertilization usually occurs in the oviducts, but can happen in the uterus itself.

Ginther, D. Dierschke, S. Walsh, C. The vasculature of uterus and ovaries was studied with the aid of a tissue-clearing technique in 13 rhesus monkeys. The uterine artery and vein formed two closely associated loops from origin to termination of each vessel. The vessels passed mediad toward the uterus, craniad along the lateral surface of the uterus, laterad toward the ovary, and terminated in a prominent anastomosis with the corresponding ovarian vessel ventral to the internal and external iliac vessels. The cranial arm of the uterine vein and the veins from the oviduct and ovary converged to form a prominent uteroovarian vein.


A complex structure of ligaments to fix the uterus to the pelvis. 7: FE models proposed in [7] for numerical simulations of cervical function.


Anatomy of the Uterus

The uterus is a secondary sex organ. Secondary sex organs are components of the reproductive tract that mature during puberty under the influence of sex hormones produced from primary sex organs the ovaries in females and the testes in males. The uterus is a thick-walled muscular organ capable of expansion to accommodate a growing fetus. It is connected distally to the vagina, and laterally to the uterine tubes. The exact anatomical location of the uterus varies with the degree of distension of the bladder.

Anatomy and Histology of the Uterine Corpus

Skip to Content. This is the first page of Cancer. Use the menu to see other pages. Think of that menu as a roadmap for this complete guide. The uterus is also called the womb. It is where a baby grows when a woman is pregnant. The uterus has 3 sections:.

Uterus , also called womb , an inverted pear-shaped muscular organ of the female reproductive system , located between the bladder and the rectum. It functions to nourish and house a fertilized egg until the fetus , or offspring, is ready to be delivered. The uterus has four major regions: the fundus is the broad curved upper area in which the fallopian tubes connect to the uterus; the body, the main part of the uterus, starts directly below the level of the fallopian tubes and continues downward until the uterine walls and cavity begin to narrow; the isthmus is the lower, narrow neck region; and the lowest section, the cervix , extends downward from the isthmus until it opens into the vagina.


Uterus, an inverted pear-shaped muscular organ of the female reproductive system, located between the bladder and the rectum. It functions to nourish and.


The Female Reproductive System

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  • Uterus. • Body- Upper expanded part. • Cervix - Lower cylindrical part. Human Anatomy. Function: maintains the angle stjamescsf.org Worlraldymi - 21.05.2021 at 15:08

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