What is the inner lining of the uterus called?

Assertion (A): Endometrium is a mucosal tissue made up of two layers. Reason (R): It is a inner lining of the uterus. Each month it thickens and renew itself, preparing for pregnancy.

What protects the inner lining of the stomach from the harmful effects of hydrochloric acid ?

Which hormone thickens the lining of the uterus ?

The inner glandular layer of the uterus is called __________