Examlex
Find the sum of the following two vectors: (i) 50 units due east and (ii) 100 units 30° south of west.
M Line
Line in the center of the H zone made of delicate filaments that holds the myosin myofilaments in place in the sarcomere of muscle fibers.
Myosin Head
The globular part of the myosin protein that binds to actin filaments in muscle cells during contraction.
Troponin
A protein complex involved in the regulation of skeletal and cardiac muscle contraction, which binds to calcium ions causing a change that allows muscle contraction.
ATPase Activity
The enzymatic activity involved in hydrolyzing ATP (adenosine triphosphate) to release energy.
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