3 Muscle Types Flashcards
Location of skeletal muscle
Attached to bones
Location of smooth muscle
Walls of hollow organs, blood vessels and glands
Location of cardiac muscle
Heart
Cell shape of skeletal muscle
Long, cylindrical
Cell shape of smooth muscle
Spindle-shaped
Cell shape of cardiac muscle
Branched, cylindrical
Nucleus of skeletal muscle
Multiple, peripherally located
Nucleus of smooth and cardiac muscle
Single, centrally located
Special cell to cell attachments of skeletal muscle
None
Special cell to cell attachments of smooth muscle
Gap junctions join smooth muscle cells together
Special cell to cell attachments of cardiac muscle
Intercalated discs
Do skeletal and cardiac muscle have striations?
Yes
Do smooth muscles have striations?
No
Are skeletal muscle autorhythmic?
No
Are smooth muscle autorhythmic?
Some
Are cardiac muscle autorhythmic?
Yes
Control of skeletal muscle
Voluntarily and involuntarily (reflexes)
Control of smooth and cardiac muscle
Involuntarily
Control of smooth and cardiac muscle
Involuntarily
Function of skeletal muscle
Body movement
Function of smooth muscle
Move food through digestive tract, empty urinary bladder, regulate blood vessel diameter, contract gland ducts
Function of cardiac muscle
Pumping blood; contraction is the major force to propel blood through blood vessels
