Cervix and Uterus: Understanding the Connection

The cervix is the narrow, lower end of the uterus that opens into the vagina. The cervix is made up of muscle and connective tissue, and it contains a small opening called the os. The os is the opening through which menstrual blood flows out of the uterus and sperm enters the uterus during intercourse.

So, the answer is yes, the cervix is part of the uterus.