Question

Give an appropriate biological/technical term for the following:

Onset of menstruation in a young girl around the age of 13 years.

Answer 1

1. Menstruation is the disintegration of the endometrial lining of the uterus which comes out from the body in the form of blood flow.
2. The initiation of menstruation in a female child at the attainment of puberty which is about 13 years, is termed menarche.