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Smooth Muscle

Smooth muscle is involuntary. There are no striations and contraction is slow, but the muscles can remain contracted for a long time. Each spindle-shaped fibre has only one nucleus and there is no regular arrangement so cells can contract in different directions.

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Specification: AQA Biology (7402), A-level, 3.6.3 Skeletal muscles are stimulated to contract by nerves and act as. Topic: Muscles.

Key terms in this lesson

glycolysis: The first stage of respiration, occurring in the cytoplasm, in which glucose is split into two molecules of pyruvate with a net yield of 2 ATP and reduced NAD.

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