The adrenal glands sit on top of the kidneys. They regulate the bodyâs response to stress by making hormones, including adrenaline and cortisol. People use adrenal extract taken from animals in the hope that the extract will function like the bodyâs adrenal gland.DRENAL EXTRACT Overview Information. Adrenal extract is a chemical that is made from the adrenal glands of slaughtered cows, pigs, and sheep. Adrenal glands make certain hormones. People use the extract as a medicine.
The earth's crust consists of a number of sections or plates that float on the molten rock of the mantle. These plates move on convection currents caused by heat rising from the center of the earth. The hot magma rises and spreads out on the surface, creating new crust.
Mantle. The mantle under the crust is about 1,800 miles deep (2,890 km). It is composed mostly of silicate rocks rich in magnesium and iron. Intense heat causes the rocks to rise. They then cool and sink back down to the core. This convection â with the consistency of caramel â is thought to be what causes the tectonic plates to move. When the mantle pushes through the crust, volcanoes erupt.