The layer of the uterine wall that is shed during menstruation is the ________.

A) perimetrium
B) myometrium
C) hymen
D) endometrium
E) vasometrium

Endometrium

The inner lining of the uterus, which thickens during the menstrual cycle to prepare for potential pregnancy.

Uterine Wall

The muscular layer of the uterus, crucial for menstrual contractions and expanding during pregnancy to accommodate a growing fetus.

Menstruation

The monthly shedding of the uterine lining in females, resulting in a period of bleeding.