This Medical News Today information article highlights the potential health benefits of zinc and provides details on good sources of the nutrient, symptoms of zinc deficiency, and precautions to consider-associated with excessive zinc intake. Only a very small intake of Zinc is necessary to reap the benefits.
Shoulder blade: The familiar flat triangular bone at the back of the shoulder. Known familiarly as the wingbone or, medically, as the scapula. The word scapula (with the accent on the first syllable) is Latin. The Romans always employed the plural scapulae, the shoulder blades. Because the shoulder blade resembles the blade of a trowel (a small shovel), the word scapula is thought to have come from the Greek skaptein meaning to dig..
The shoulder is a ball and socket joint (Figure 2). The ball is the upper part of the arm bone (humerus) and is called the humeral head. The socket is smaller and is part of the shoulder blade (scaptila). The ball is held in the socket by ligaments and by the rotator cuff tendons. The rotator cuff muscles start on the shoulder blade and turn into tendons which attach to the ball. In shoulder replacement surgery the ball is replaced with a metal ball attached to a stem (Figure 3). The stem is inserted down the shaft of the humerus.