VAGINA

  INTERNAL GENITAL ORGANS-VAGINA

VAGINA:

1.      INTRODUCTION:

It is a female Reproductive internal organ.

2.      SITUATION:

Tube like  structure.

3.      SHAPE:  Tube like structure.

4.      MEASURMENT:

Anteriorly – 7.5CM (3 inches)

Posterior- 9 cm.

5.      STRUCTURE:

    Vagina has 3 layers

1.      Outer covering- areolar tissue

2.      Middle layer    - smooth muscle

3.      Inner layer       - stratified squamous epithelium.

v  It maintaining the PH between 4.9 to 6.5.

v  It is acidic in nature, which secretes the lactic acid.

v  The acidity inhibits the growth of most other microbes that may enter the vagina from the perineum.

6.BLOOD SUPPLY:

 ARTERINAL SUPPLY: uterine &  vaginal arteries which are branches of the internal Iliac arteries.

VENOUS DRAINAGE:

                                      Venous plexus &  internal iliac veins.

7.NERVE SUPPLY: sympathetic & parasymphetic.

8.FUNCTIONS OF THE VAGINA:-

v  The vagina acts as the receptacle for the penis during coaitus.

v  Provides an elastic passage way through which the baby passes child birth.