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The muscular system A+P CH.7 lecture 1 (types of muscles (skeletal…
The muscular system A+P CH.7 lecture 1
provides framework of the body and allows for movement
muscles
structure of muscles matches its function
Contractile property of muscle tissue
allows it to become short and thick resulting in nerve impulse and then relax
when impulse is removed, alternative contractions and relaxation causes movement
muscle tissue
bundles of these fibers, each approximately size of hair
types of muscles
skeletal
voluntary, attach to bones of skeletal system, fibers appear striped and allow for eternal movement. Developed through exercise
smooth
involuntary. Don't have striped appearance. found within certain organs (blood vessels, airways) allows for internal movement
cardiac
involuntary. striated appearance. Found only in heart. contraction of muscle causes heartbeat (internal movement)
all muscles have ability to stretch
myopathy
causes:injury genetics, nervous system disorders, medication, cellular abnormalities
symptoms: weakness, cramping, stiffness, and spasms
treatment: Depends on cause
Tendons
fibrous tissue that attach skeletal muscle to bone
ligaments
bone to bone