| Question |
Answer |
| skeletal muscle tissue - structure |
structure - fibers are long, cylindrical, parallel, unbranched, multinucleated, striated (alternating light and dark bands) |
| cardiac muscle tissue - structure |
structure - fibers are short, striated, and bifurcated (branched), with one or two centrally located nuclei; intercalated discs between cells (strong gap junctions) |
| smooth (visceral) muscle tissue - structure |
structure - fibers are fusiform (spindle-shaped), short, nonstriated, and contain one centrally located nucleus |
| skeletal muscle tissue - function |
function - moves skeleton; responsible for voluntary body movements; locomotion; heat production |
| cardiac muscle tissue - function |
function - involuntary contraction and relaxation help pump blood on heart |
| smooth (visceral) muscle tissue - function |
function - involuntary movements and motion; moves materials through internal organs |
| skeletal muscle tissue - location |
location - attaches to bones or sometimes to skin (e.g. facial muscles); also in the voluntary sphincters (lips, urethra, anus) |
| cardiac muscle tissue - location |
location - heart walls (myocardium) |
| smooth (visceral) muscle tissue - location |
location - walls of hollow internal organs (vessels, airways, stomach, bladder, uterus) |
HHS Shrek
