Muscular system basic info and naming info

types of skeletal muscles

striated, multinucleated and voluntary

types of cardiac muscles

striated, single nucleus and involuntary

types of smooth muscles

non-striated, single nucleus and involuntary

Functions of skeletal muscles

• Movement of the body – contraction of skeletal muscles

• Maintenance of posture – skeletal muscles constantly maintain tone

• Respiration – muscles of thorax

• Production of body heat – byproduct of skeletal muscle contraction

• Communication – speaking, writing, typing, gesturing, facial expressions

• Constriction of organs and vessels – helps propel & mix food & water, regulate blood flow, propel secretions from glands

• Contraction of heart – causing the heart to beat

rectus

parallel to midline ex. rectus abdominous