Vaginal delivery and breast-feeding diminish the incidence of allergy and asthma in children up to the age of 18 years, according to new research. "This is one of the largest cohorts of its kind in ... In humans, it extends from the vulval vestibule to the cervix (neck of the uterus).

Understanding the Context

The vaginal introitus is normally partly covered by a thin layer of mucosal tissue called the hymen. The vagina also channels menstrual flow, which occurs in humans and closely related primates as part of the menstrual cycle. Vaginas are usually around 3 inches long but may vary widely in color, size, and shape. The vaginal opening is the part of the vagina visible outside the body.

Key Insights

People commonly describe the... Vaginal health affects more than just a person's sex life. Find out about common vaginal problems and how to have a healthy vagina. Vaginal health is vital to overall health. When the vagina is not healthy, it can affect the quality of sex and orgasms.

Final Thoughts

It also may affect pregnancy. Review the essentials of vaginal anatomy, including its parts and function. Learn what's normal and understand the parts involved in sexual health. The vagina is a distensible fibromuscular tube extending from the cervix to the vaginal orifice, the opening at the inferior end of the vagina. Its major functions include copulation and... Renita White, MD, is an obstetrician/gynecologist at Georgia Obstetrics and Gynecology in Atlanta, Georgia.

Her areas of expertise include fibroids, irregular vaginal bleeding, abnormal pap... In humans the vagina is about 9 cm (3.5 inches) long on average; it is located in front of the rectum and behind the bladder. The upper region of the vagina connects to the cervix of the uterus. The vaginal channel is narrowest at the upper and lower ends.