Vaginal tissue that rubs against clothing can lead to vaginal sores ulcers. Parasympathetic supply is from second, third and fourth sacral nerves. The hollow muscular organ in which the ootid is developed into the embryo and fetus; it is about 7. Normally, supporting ligaments and other connective tissues hold your uterus in place inside your pelvic cavity. The endometrium then serves to anchor the placenta, which filters nutrients from the mother's blood into the blood of the growing fetus.
Meanwhile, should we use a condom during sex?
The muscle fibers contract during childbirth to expel the fetus. Pregnancy lasts an average of days — about 9 months. When the contractions of labor begin, the walls of the uterus contract as they are stimulated by the pituitary hormone oxytocin. The internal organs of generation consist in the female of the Vaginathe Uterus, the Ovaries and their appendages. A very thin piece of skin-like tissue called the hymen partly covers the opening of the vagina. After approximately 8 weeks, the embryo is about the size of an adult's thumb, but almost all of its parts — the brain and nerves, the heart and blood, the stomach and intestines, and the muscles and skin — have formed. Published by Houghton Mifflin Company.