Normal skeletal muscle morphology

A skeletal muscle is composed of a large number of muscle fibres separated by connective tissue (endomysium) and arranged in bundles (fasciculi) in which the individual fibres are parallel to each other. Each fasciculus has a connective tissue sheath (perimysium) and the muscle itself is composed of a number of fasciculi bound together and surrounded by a connective tissue sheath (epimysium).

_ Endomysium

Muscle fibre

_ Endomysium

Epimysium Perimysium

Muscle fibre

Epimysium Perimysium

Fasciculus

Fasciculus

The three envelopes (sheaths) are made up of connective tissue richly endowed with blood vessels and fat cells (lipocytes).

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