Menstrual Cycle

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C16838

The monthly cycle of hormonal changes from the beginning of one menstrual period to the beginning of the next.

C16838

The Menstrual Cycle involves regularly recurring hormonal changes and physiologic endometrial changes during the reproductive period in human females, and some primates, and culminates in partial sloughing of the endometrium (menstruation) in the absence of fertilization. For most women, one cycle takes 28 days. (NCI)

Menstrual Cycle

Menstrual_Cycle

Menstrual Cycle

C16838

Menstrual Cycle

Physiologic Function

C0025329

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C21173