A regional airline pilot flies passengers to and from small and mid-sized airports. They also ferry passengers to major airports, where connecting flights on larger planes await. Typically, a regional pilot carries between 19 and 70 passengers, depending on the size and type of planes the airline uses.fter gaining experience by accumulating flight hours, first officers may become captains, who earn an annual average of $55,000. If a captain is taken on by a major airline, it is usually to the position of first officer or flight engineer. Once promoted back to captain, the average annual salary is about $135,000.
1 The action potential opens gates in the muscle's calcium store (sarcoplasmic reticulum). 2  Calcium ions flow into the cytoplasm, which is where the actin and myosin filaments are. 3  Calcium ions bind to troponin-tropomyosin molecules located in the grooves of the actin filaments.
This calcium then binds to troponin, causing tropomyosin to move and allowing cross-bridges to form between the myosin and actin filaments. The actin is then pulled (slides) across the myosin. Unlike skeletal muscle, there is no neuromuscular junction or troponin in smooth muscle.Instead, contraction is started by the release of neurotransmitter vesicles (membrane bound containers) into the space between the cells. In smooth muscle calcium acts directly on the myosin head-causing cross-bridges to form.he actin is then pulled (slides) across the myosin. Unlike skeletal muscle, there is no neuromuscular junction or troponin in smooth muscle. Instead, contraction is started by the release of neurotransmitter vesicles (membrane bound containers) into the space between the cells.