Final answer:
A visual examination of the cervix is performed using a medical test called a Pap smear, where a small sample of cells is taken and examined for abnormal cell growth or infections.
Step-by-step explanation:
A visual examination of the cervix is typically performed using a medical test called a Pap smear. During this procedure, a doctor inserts a speculum into the vagina to hold back the vaginal walls and give access to the cervix. A small sample of cells is then taken from the cervix and examined under a microscope for abnormal cell growth or infections. This test is commonly used to detect cervical cancer.