Muscular sytem

Functions of muscle tissue

producing movement

stabilizing body position

storing substances

generate heat

move substances through the body

Properties of muscle

electrical excitability

contractility

extensibility

elasticity

3 types of muscle

skeletal, cardiac, smooth,

what does cardiac muscle look like

branching, striated, generally uninucleated cells that interdigitate

function of cardiac muscle

contracts to propel blood into the circulation, involuntary control

where are the cardiac muscles located in the body

the walls of the heart

what does smooth muscle look like

spindle shaped cells with a central nuclei, no striations, cells arranged closely to form sheets

function of smooth muscles

propels substance or objects along internal passageways, involuntary

location of smooth muscle

mostly on the walls of hollow organs like intestines

properties of smooth muscles

involuntary, no t-tubules, srcoplasmic reticulum contacts sarcolemma, no sarcomeres, intermediate filaments attach to dense bodies instead

skeletal muscle vs cardiac muscke fibers

cardiac: not parallel

skeletal: parallel

what things do cardiac muscles have that smooth muscles dont

o t-tubules, sarcoplasmic reticulum contacts sarcolemma, no sarcomeres, intermediate filaments attach to dense bodies