The term Cervix is a 4-letter word meaning 'NECK'. It is the lower, narrow part of the uterus that connects to the vagina and is located at the top of the vagina. It is a cylindrical shaped organ that is made up of muscle and connective tissue and is responsible for controlling the flow of menstrual blood. The cervix also plays an important role in childbirth by dilating during labor to allow the baby to pass through the birth canal.