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.
The ducts can be traced from the base of the nipple back into the parenchyma. The mean number of main ducts greater than 0.55 mm diameter at the base of the nipple was approximately 10 for the left breast and 9 for the right breast.