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.
to contraction in skeletal muscle. The trigger for a muscle contraction is an electrical impulse. The electrical signal sets off a series of events that lead to crossbridge cycling between myosin and actin, which generates force. The neurotransmitter crosses the gap, binds to a protein (receptor) on the muscle-cell membrane and causes an action potential in the muscle cell. 2  The action potential rapidly spreads along the muscle cell and enters the cell through the T-tubule.