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17 Cards in this Set
- Front
- Back
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What are the three types of muscle?
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Skeletal, smooth and cardiac
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What does 'striated' mean?
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Having parallel lines or grooves on the surface
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Skeletal muscles deal with voluntary/involuntary movements? Controlled by which NS?
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Voluntary, sympathetic NS
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What are the two types of skeletal muscle fibres?
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Red or White
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What are the characteristics of red muscle fibres? (Skeletal)
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High myoglobin and mitochondria content
Slow twitch Energy from aerobic respiration Sustained and vigorous activity |
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What are the characteristics of white muscle fibres? (Skeletal)
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Fast twitch
Greater rate of contraction than red Fatigue more easily |
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What is muscle?
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A bundle of parallel fibres
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What is a sarcomere?
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A unit of a myofibril
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What's special about the nuclei of skeletal muscle?
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It is multinucleated and found at the periphery of the cell
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What is special about the nuclei of smooth muscles?
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It is mononucleated and central
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Smooth muscle is responsible for voluntary/involuntary actions? Which NS does it use?
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Involuntary, autonomic NS
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Where is smooth muscle located?
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Digestive tract, bladder, uterus, blood vessel walls
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Unlike skeletal muscle, smooth muscle does not contain...
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Striations
The filaments lack the organisation of skeletal sarcomeres |
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What are the two filaments of muscle?
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Actin and myosin
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Which muscle types are myogenic?
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Cardiac and Smooth
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What is cardiac muscle like in relation to the other types?
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A mixture of both - stirated in sarcomeres but autonomous
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