layers of uterus

 Layers of Uterus

Body consist three layers;

1. Parametrium (perimetrium)

2. Myometrium

3. Endometrium

1. Parametrium

Parametrium is also known as perimetrium

It is outer layer.

It is protective layer.

2. Myometrium; 

Myometrium is middle layer. Thick bundle of smooth fibres held by connective tissue.

Arranged in;

Outer longitudinal

Middle interlacing

Inner circular

Myometrium layer expand during pregnancy and contract to push baby out.

3. Endometrium; inner layer, uterine layer 

Mucus lining cavity called endometrium, shed during menstrual cycle.

It contains endometrial glands, vessels, nerves.

Layers of Endometrium

Layers of endometrium are;

1. Stratum compactum

2. Stratum spongiosum

3. Stratum basalis

Endometrium layer divided into Two layer;

1. Functional layer 

2. Basal layer

1. Functional layer 

It is site of proliferation, secretion and degeneration.

2. Basal layer

Regenerative endometrium after menstrual loss of functionalis.

Endometrium – Changes to (Decidua) during pregnancy.