How does cardiac muscle differ from skeletal muscle?

Answer 1

Skeletal muscle is functionally a voluntary muscle but the cardiac muscle is not.

Shape of skeletal muscle fibre is cylindrical: that of cardiac muscle fibre is ribbon like. Moreover the cardiac muscle fibres are branched.

Skeletal muscle fibre is syncytial, i.e. each cell contains multiple number of nuclei, but cardiac muscle fibre is uninucleated.

Junction between two adjacent cardiac cells show intercalated discs where cytoplasmic bridges are present between cells. This is why cardiac muscle cells form a functional syncytium.

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Answer 2

Luna Cruz

Structurally cardiac muscles are striated muscles. But cardiac muscles are involuntary.

Majority of striated muscles act quickly. Involuntary muscles act slow. Their contraction is slow but sustained. On the other hand striated muscles contract fast.

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Answer 3

Madeline Andrews

Cardiac muscle is located in the heart, whereas skeletal muscle is attached to bones.2. Control: Cardiac muscle contracts rhythmically without conscious control, whereas skeletal muscle is voluntary and contracts in response to conscious commands from the nervous system.3. Structure: Cardiac muscle cells are branched and interconnected by intercalated discs, whereas skeletal muscle cells are long and cylindrical with multiple nuclei located on the periphery.4. Contraction pattern: Cardiac muscle contracts in a coordinated manner to pump blood throughout the body, whereas skeletal muscle contracts to produce movement at joints.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.