Ronda, James P. (1998). Voyages of Discovery: Essays on the Lewis and Clark Expedition. Montana Historical Society Press, Helena, MT. Woodger, Elin and Brandon Toropov (2004). Encyclopedia of the Lewis and Clark Expedition. Facts on File, New York, NY. You can uncover more fascinating food history on Toriâs website: The History Kitchen.
Muscle contraction results from an attachmentâdetachment cycle between the myosin heads extending from myosin filaments and the sites on actin filaments. The myosin head first attaches to actin together with the products of ATP hydrolysis, performs a power stroke associated with release of hydrolysis products, and detaches from actin upon binding with new ATP. The detached myosin head then hydrolyses ATP, and performs a recovery stroke to restore its initial position.
What is a stroke? A stroke, sometimes called a brain attack, occurs when blood flow to an area in the brain is cut off. The brain cells, deprived of the oxygen and glucose needed to survive, die. If not caught early, permanent brain damage can result. How does a stroke occur? There are two types of stroke.