Burs/o-
bursa
Myos/o-
msucle
Voluntary movement
contraction and relaxation of a muscle consciously
-skeletal muscles
Striated muscles have what?
multiple nuclei and have bands of color
Cardiac Muscle and Smooth Muscle is what?
involuntary
A muscle is attached to a bone through…
tendon
Beginning of a muscle where tendon is attached to a stationary bone is called…
origin
Ending of a muscle where it is attached to the bone that it moves is called…
insertion
Thin sac of synovial fluid
bursa
Each muscle is wrapped in what?
fascia
Aponeurosis
CT that attaches to flat muscles
Eversion movement
move something laterally
Inversion movement
move something medially
Masseter
cheek muscles
Orbicularis Oculi
around eye
Biceps Brachii
bends arm toward shoulder
bends lower arm toward upper arm
Triceps Brachii
straightens lower arm
Internal Oblique
outside of abdomen
Rectus Abdominis
actual ab
Hamstrings
three muscles
- biceps femoris
- semitendinosus
- semimembranosus
Each muscle fiber is contained of what?
myofibrils that contain proteins actin and myosin
Neuromuscular junction
connects each muscle fiber to a nerve
Acetylcholine
changes permeability of the muscle fibers which shortens muscle and produces contraction
Atrophy
loss of bulk
