The symptoms vary enormously between people with myasthenia gravis: 1  The muscles around the eyes are most commonly affected first, as these are constantly used and can quickly tire. 2  Muscles around the face and throat are also often affected. 3  Weakness in the arms, hands, fingers, legs and neck may develop.
In its most general form, a nipple is a structure from which a fluid emanates. More specifically, it is the projection on the breasts or udder of a mammal by which, in females, breast milk is delivered to a mother's young.
When used as an anatomical term, areola can refer to any round area, but it is most commonly used to refer to the circular, pigmented area around the human nipple. Though areolas are present in men, women, boys and girls, they are larger and usually darker in color in women.