Studied by 22 peoplethree types of muscle tissue
smooth muscles, cardiac muscles, skeletal muscles
are smooth muscle voluntary or involuntary?
involuntary
what do smooth muscle tissue cells look like?
cells have one nucleus and tapered on both ends
how do the smooth muscles act?
slower, but capable of far greater contractions
where are smooth muscles usually found?
organs and arteries
are we aware of the activities of smooth muscles?
no
are cardiac muscles voluntary or involuntary?
involuntary
how are cardiac muscles contracted?
by nerve impulses from the autonomic nervous system
what do the cardiac muscles look like?
they are branched
what do cardiac muscle cells look like?
single nucleus with each cell being separated by intercalated discs
are skeletal muscles voluntary or involuntary?
voluntary
what do skeletal muscles move?
they move bone (usually)
how do skeletal muscles act?
they are faster, but have lesser contractions
what do skeletal muscle cells look like?
they are multinucleated and have striation (or lines) running perpendicular to the muscle cell fiber
3 types of connective tissue surrounding muscle
epimysium, endomysium, perimysium
epimysium
connective tissue that surrounds the entire muscle
endomysium
connective tissues that wraps each individual muscle fiber (cell)
perimysium
the connective tissue that wraps around a bundle (12 or more) muscle fibers. bundle called a fascicle
what do muscle cells do when contracted?
they pull on connective tissue, which then pulls on the bones, then that moves the skeleton.
what are extensions of the epimysium?
tendons
Note
Flashcard