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17 Cards in this Set
- Front
- Back
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What is the role of muscle tissue? |
1.Movements of the body and its body parts. 2.Changing shape and size of the internal organs. |
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Give a description of muscle tissue? |
It characterized by aggregates of specialized, elongated cells arranged in parallel array. |
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What is the cytoplasm of muscle tissue |
Sarcoplasm |
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What is sarcolemma? |
It is the surrounding membrane |
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What is myofilament? |
It is the protein responsible for the interaction for cell contraction |
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What is myosin? |
Thick myofilament |
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What is actin? |
Thin myofilament |
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What are the three types of muscle tissue? |
Skeletal:large muscles for gross movement Smooth: walls of visceral organs and other locations where it provides elasticity, contractility and support. Cardiac :found only in the heart and responsible for gross body movements |
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Give a description of skeletal muscle? |
It has long and slender cells called muscle fibres. Each is muscle fibre is multinucleated. Each muscle fibre contains contractile and protein called actin and myosin filament. Skeletal muscles do not usually contract unless stimulated by nerves under voluntary control. |
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Myosatellite? |
It is the stem cells that produce new cells that are persistent in adult muscle. (skeletal muscle tissue) |
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What influence does actin and myosin filament have on the cell structure? |
The arrangement of the protein gives muscle fibres a striated or banded appearance. |
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What is the overlapping of the two protein? |
A band, and appears dark under microscope |
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Describe cardiac muscle tissue? |
1.branched cardiocytes 2.striated 3.unicellular 4.short 5.held together by intercalated discs |
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What is a pacemaker cell? |
It is a cell that establishes the contraction and sets the pace for other cells |
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Is smooth muscle tissue multinucleated or unicleated? |
Unicleated |
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How is smooth muscle tissue different to others? |
It is not striated but still has the same protein in a different arrangement |
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What is the function of the smooth muscle tissue? |
1.Moves Food, urine and reproductive tract secretion. 2.Controls diameter of respiratory passageways 3.Regulates diameter of blood vessels |
