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Skeletal Muscles | Complete Anatomy
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Over one-third of the total human body mass is made up of skeletal muscle.
Skeletal muscle, smooth muscle and cardiac muscle are the three varieties of muscle in the body.
Unlike smooth and cardiac muscles, the skeletal muscles are voluntary and can be categorized according to its muscle fibers.
TYPE OF MUSCLE FIBERS
Parallel muscle fibres are parallel to the line of pull. While pennate muscle fibres are oblique to the line of pull.
Pennate muscle can be categorized based on its patterns as unipennate, bipennate and multipennate.
MUSCLE ATTACHMENTS
The skeletal muscles are often attached to the bones via tendons.
An origin refers to the proximal attachment point of a muscle and the distal attachment site is called insertion.
MUSCLE ACTION
Muscle contracts when it is stimulated. The contraction brings the two ends of the muscle together causing changes in muscle length.
Flexion at the elbow joint is made possible by the prime mover, the brachialis muscle.
The biceps brachii get a lot of attention but they are the synergists in elbow flexion.
Skeletal muscle, smooth muscle and cardiac muscle are the three varieties of muscle in the body.
Unlike smooth and cardiac muscles, the skeletal muscles are voluntary and can be categorized according to its muscle fibers.
TYPE OF MUSCLE FIBERS
Parallel muscle fibres are parallel to the line of pull. While pennate muscle fibres are oblique to the line of pull.
Pennate muscle can be categorized based on its patterns as unipennate, bipennate and multipennate.
MUSCLE ATTACHMENTS
The skeletal muscles are often attached to the bones via tendons.
An origin refers to the proximal attachment point of a muscle and the distal attachment site is called insertion.
MUSCLE ACTION
Muscle contracts when it is stimulated. The contraction brings the two ends of the muscle together causing changes in muscle length.
Flexion at the elbow joint is made possible by the prime mover, the brachialis muscle.
The biceps brachii get a lot of attention but they are the synergists in elbow flexion.
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