Muscle Types and Parts Quiz

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<p>Bundled as tubes (B)</p> Signup and view all the answers

<p>To attach muscle to bone (D)</p> Signup and view all the answers

A type of voluntary muscle that is bundled like tubes, controlled by somatic nerves.

Involuntary muscle found in the heart; rectangular shape.

Involuntary muscle with a single nucleus; found in internal organs, like blood vessels.

The fleshy part of the muscle. Its thickness changes when the muscle contracts.

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Connective tissue attaching muscles to bones; not contractile.

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Muscles are categorized as voluntary or involuntary
Voluntary muscles are controlled consciously, while involuntary muscles function automatically.
Skeletal muscles are voluntary, controlled by the somatic nervous system. These muscles are found in the upper and lower limbs and head/neck.
Cardiac muscles are involuntary and have a rectangular shape. Controlled by the autonomic nervous system.
Smooth muscles are involuntary and have a bundle-like/tubular structure. Controlled by the autonomic nervous system, and can be found in internal organs like blood vessels, gastro-intestinal tract, and urinary bladder.

Fibers are the fleshy parts of muscle responsible for contraction, they thicken upon contraction
The origin is the fixed, proximal (closer to the body's midline) end of a muscle
The insertion is the movable, distal (farther from the body's midline) end of a muscle