The gap junctions spread action potentials to support the synchronized contraction of the myocardium. In cardiac, skeletal, and some smooth muscle tissue, contraction occurs through a phenomenon known as excitation contraction coupling (ECC). ECC describes the process of converting an electrical stimulus from the neurons into a mechanical response that facilitates muscle movement.
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The functional and structural unit of the skeletal muscle cell. The model that describes the contraction of the muscle is called the. The electrical properties of cells are the result of. A muscle fiber will respond to a stimulus when that stimulus reaches the _____ level.
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An elongated protein that winds along the groove of the F actin double helix. Composed of 3 subunits: one that binds to actin, a second that binds to tropomyosin, and a third that binds to calcium ions. Spaced between the ends of the tropomyosin molecules in the groove between the F actin strands.
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A muscle contraction is described as isometric if the muscle tension changes but the muscle length remains the same. In contrast, a muscle contraction is isotonic if muscle length changes but the muscle tension remains the same. If the muscle length shortens, the contraction is concentric; if the muscle length lengthens, the contraction is eccentric. In natural movements that underlie locomotor activity, muscle contractions are multifaceted as they are able to produce changes in length and tension in a time-varying manner.
https://en.wikipedia.org/wiki/Muscle_contraction
There are two types of cardiac muscle cells: autorhythmic and contractile. Autorhythmic muscle cells do not contract, but instead set the pace of contraction for other cardiac muscle cells, which can be modulated by the autonomic nervous system.
https://en.wikipedia.org/wiki/Muscle_contraction
Cardiac Muscle Tissue. Cardiac muscle tissue is only found in the heart. Highly coordinated contractions of cardiac muscle pump blood into the vessels of the circulatory system. Similar to skeletal muscle, cardiac muscle is striated and organized into sarcomeres, possessing the same banding organization as skeletal muscle ([link]).
http://philschatz.com/anatomy-book/contents/m46404.html
Muscle contraction is the activation of tension-generating sites within muscle fibers. In physiology, muscle contraction does not mean muscle shortening because muscle tension can be produced without changes in muscle length such as holding a heavy book or a dumbbell at the same position.
https://en.wikipedia.org/wiki/Muscle_contraction
By the end of this section, you will be able to: * Describe intercalated discs and gap junctions * Describe a desmosome. Cardiac muscle tissue is only found in the heart. Highly coordinated contractions of cardiac muscle pump blood into the vessels of the circulatory system.
http://philschatz.com/anatomy-book/contents/m46404.html
1 Cardiac muscle fibers contract via excitation-contraction coupling, using a mechanism unique to cardiac muscle called calcium-induced calcium release.  Excitation-contraction coupling describes the process of converting an electrical stimulus (action potential) into a mechanical response (muscle contraction).
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Describe the mechanism and contraction events of cardiac muscle fibers. Cardiac muscle fibers contract via excitation-contraction coupling, using a mechanism unique to cardiac muscle called calcium-induced calcium release.
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which type of muscle tissue causes contraction of the heart?
Cardiac Muscle Tissue is a type of muscle tissue causes contraction of the heart. Cardiac muscle tissue is a type of muscle tissue that causes contraction of the heart.