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Anatomy Of The Uterus

By Edited Apr 29, 2016 0 0

Uterus Anatomy

The word uterus actually comes from the Latin word, “uterus” or “uteri” which is known to be the womb. This is a major organ that can be found in the female reproductive system responsible for making child bearing possible. This is actually one of the main female reproductive sex organs that are very sensitive when it comes to the action of hormones. The uterus is indispensable when it comes to human reproduction. This can be considered as the core of reproduction where implantation of the zygote actually takes place. It is composed of several different parts that make it possible for performing its reproductive functions.

The Functions Of The Uterus

Main functions of the uterus

The uterus has several important functions when it comes to reproduction. It has several different parts including the body and the cervix. The uterus is located in the pelvis and are held in place by several different ligaments. There are actually different ligaments that are used to hold the uterus and these include the transverse ligament, the cardinal ligaments, the cervical ligaments , the uterosacral ligaments and lastly, the pubocervical ligaments. One specific ligament that is described to be a fold of the peritoneum known as the broad ligament serves to cover the uterus for protection.

The uterus is the one responsible for making menstruation possible. As the hormones from the pituitary gland is actually released, they act upon the uterus leading to the latter’s immediate response to such stimulation. The lining of the uterus is the one that is being shed during menstruation that is why it is very important in the female reproductive system. Aside from that, the uterus is also capable for allowing the blood to flow or pass to the pelvis and eventually to the external genitals or the vagina.

The uterus is also the one responsible for housing the ovum that comes from the fallopian tube. The ovum will then implant into the endometrial lining of the uterus where it is given an adequate supply of blood, oxygen and nutrients from the great distribution of blood vessels in the said area. The ovum will not survive if it does not receive adequate nourishment from the blood that is why it implants in an area where it can be definitely be supported and that is the uterus. The ovum, once it is already fertilized, becomes an embryo, which will attach to the wall and eventually develop its placenta. The placenta will serve as the house of the embryo as it grows later on. The embryo will then develop into a fetus until it eventually is ready for childbirth after some time.

Uterine Structure

The uterus can be found inside the pelvis just above or specifically dorsal to the bladder. It is located ventral to the rectal area as well. If you are to observe the uterus, it can actually be described as something with a pear shape and is measuring about 7 to 8 centimeters in length. There are actually four different parts or segments of the uterus which are known as the corpus or the uterine body, the fundus, the cervix and lastly, the os.

If you are going to look into the parts of the uterus, it is actually arranged based on the following. The external part of the uterus is known to be the cervix or what is known to be the neck of the uterus. The cervix is further divided into several areas known as the external os of the uterus, the central canal of the cervix and lastly, the internal os of the cervix which is the one closest to the body of the uterus. After the cervix, the body of the uterus itself comes next. The body of the uterus is also known as the corpus which is further divided into two parts known as the cavity of the corpus and the fundus. The fundus is known to be the topmost area of the uterus that has a lot of blood supply.

The Layers Of The Uterus

Several layers of the uterus

Aside from the several parts of the uterus, it also has several layers. First of all, it has the innermost layer or the lining known as the endometrium. The endometrium is further divided into two different parts or areas known as the basal endometrium and the functional endometrium. The functional endometrium is the one that is being shed during the menstrual process. The next layer after the endometrial lining is known to be the myometrium. The myometrium is mainly composed of the muscles that make up the uterus which are primarily smooth muscles. The next layer is known to be the parametrium which is the loose connective tissue that can be found covering or surrounding the uterus. The perimetrium is known to be the last layer of the uterus which is known to cover or protect the fundus.

Position Of The Uterus

Location of the uterus in the body

 The uterus is supported  by different structures to ensure its placement in the pelvic cavity. These structures are known to be the perineal body, the pelvic diaphragm and the urogenital diaphragm. The position of the uterus is not like any usual organ because it is placed in anteversion in the cavity. The anteverted position means that the organ is in the forward angle that lies in the axis of the vagina and that of the cervix. The angle is known to be measuring 90 degrees whenever the rectum and the bladder is empty.

Blood Supply Of The Uterus

Blood supply of the uterus

The uterus should be adequately supplies with blood so that it could maintain its function especially during pregnancy when the uterus needs most of the blood supply it could get from the body. The uterus is supplied by the ovarian artery, the arcuate artery, the radial artery, the spinal artery and the basal artery. These comprise the arterial vasculature of the uterus. The main supplier of blood in the uterus is known to be the ovarian artery and also the uterine artery.

These details simply show that the uterus is a very integral part of the female reproductive system. It serves important functions in maintaining normal female body functioning.

If you enjoyed reading this article other articles which may interest you include:

Anatomy Of The Heart

Anatomy Of The Gall Bladder

Anatomy Of The Small Intestine

Anatomy Of the Stomach

Anatomy Of The Spleen

Anatomy Of The Kidneys

Anatomy Of Lungs

Anatomy Of The Back

Anatomy Of The Shoulder

Anatomy Of The Neck

Anatomy Of The Foot

Anatomy Of The Arm



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