2.4 Muscle and Bone Flashcards

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Last updated 3:15 PM on 4/27/26
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12 Terms

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<p>Muscle</p>

Muscle

A body tissue made of fibers that contract to produce movement.

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<p><span>Muscle fiber</span></p>

Muscle fiber

 A single muscle cell that contracts and produces force.

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<p><span>Fascicle</span></p>

Fascicle

A bundle of muscle fibers grouped together.

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<p><span>Endomysium</span></p>

Endomysium

A thin layer of connective tissue surrounding each muscle fiber.

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Perimysium

Connective tissue that surrounds a fascicle (bundle of muscle fibers).

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Epimysium

The outer layer of connective tissue that surrounds the entire muscle.

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Tendon

A tough band of connective tissue that attaches muscle to bone.

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Ligament

A band of connective tissue that connects bone to bone.

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Sarcomere

The basic unit of muscle contraction within a muscle fiber.

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Actin

A thin filament in muscle fibers that helps with contraction.

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Myosin

A thick filament in muscle fibers that pulls on actin to cause contraction.

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Cross bridge cycle

The process where myosin heads attach to actin, pull, release, and repeat to cause muscle contraction.