Question

Which layer of the uterus, exhibits strong contraction during the delivery of the baby ?

• A. endometrium
• B. myometrium
• C. perimetrium
• D. epimetrium

Answer 1

Answer:

B. myometrium

Uterus (Womb):

• The shape of the uterus is like an inverted pear. 
• The uterus opens into vagina through a narrow cervix.
• The cavity of the cervix is called cervical canal which along with vagina forms the birth canal.

The wall of the uterus has three layers of tissue;

1. Perimetrium: It is the external thin membranous layer of uterus
2. Myometrium:

• It is the middle thick layer of uterus. It contains smooth muscle.
• The myometrium exhibits strong contraction during delivery of the baby.

3. Endometrium: 

• It is the inner most layer of uterus and is a glandular layer.
• The Endometrium undergoes cyclical changes during menstrual cycle.