found on walls of blood vessels, digestive, respiratory, urinary, reproductive organs
cardiac muscle ✔️✔️involuntary,
striated, sarcomeres
short, branched, intercalated discs,
single nucleus,
no regeneration,
found on the heart
skeletal muscle ✔️✔️voluntary,
striated, sarcomeres
long, cylindrical,
multi-nucleate along top/bottom,
not good regeneration,
found on bones for movement
characteristics of muscle tissue ✔️✔️a. excitability
b. contractility
c. elasticity
, excitability ✔️✔️can carry an electrical signal, the electrical signal is called an action potential which is
actually a change of charge across the membrane of a cell
which other cell can carry action potentials? ✔️✔️neurons
contractility ✔️✔️through special protein filaments in muscle that contain actin and myosin
elasticity ✔️✔️muscles recoil back to shape and stretch (smooth muscles are better at stretching than
skeletal muscle)
functions of muscle tissue ✔️✔️a. motion
b. posture
c. body heat
where is skeletal muscle located relative to the skin? ✔️✔️underneath the skin, directly or indirectly
attached to the bones of the skeleton
to reach skeletal muscle you would have to cut through the following layers ✔️✔️1. skin
why is the hypodermic layer important? ✔️✔️insulation (body temp), fat storage, protects the organs
and bones
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