#muscles notes

[er-cryptid]

Multiunit Smooth Muscle

-- location      -- large airways of the lungs      -- arrector pili      -- pupils      -- large arteries

-- no gap junctions

-- act as individual cells

-- many nerve ending attachments

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[er-cryptid]

Fascicle Arrangement Examples

Circular = orbicularis oris

Convergent = pectoralis major

Parallel = sartorius

Unipennate = extensor digitorum longus

Bipennate = rectus femoris

Multipennate = deltoid

Fusiform = biceps branchii

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[er-cryptid]

Kinds of Muscles

-- there are three kinds of muscles      -- cardiac      -- smooth / visceral      -- skeletal

Cardiac Muscle -- found only in the heart -- forms the wall of the heart -- contracts to circulate blood -- involuntary muscle

Smooth / Visceral Muscle -- can be called either name -- found in internal organs -- contracts to cause movement in these systems -- involuntary muscle

Skeletal Muscle -- attached to bone -- cause body movements -- voluntary muscle

[er-cryptid]

Location Names for Muscles