Muscle test Flashcards
Ligaments attach
bone to bone
Tendons attach
muscle to bone
One of the functions of muscle tissue
movement, contractions
Fascicles
individual bundles within each muscle
surrounded by perimysium
Striated skeletal muscle tissue
.
The function of calcium ions in skeletal muscle contraction is to
expos the myosin binding sites on actin filaments
What’s involved in muscle contraction
- shortening of sacromeres
- contraction
- pulling of muscle against its attachment
A motor unit is
the motor neuron and muscle fiber it controls
The muscle protein whose function is related to it’s golf club like shape is
myosin
myofibril
thick filaments made up of myosin, actin
striated
actin
globular protein with myosin binding cites
“pearls”
sarcolemma
cell membrane
myosin
globular cross bridges
“golf clubs”
perimysium
surrounds individual bundles (fascicles)
The pigment that stores oxygen in muscle cells is called
myoglobin
Accumulates as the end product of anaerobic respiration in muscle cells
lactic acid
Muscle fatigue occurs because
of an accumulation of lactic acid in the muscle
A muscle cramp occurs because of
a lack of ATP required to return calcium ions
so the muscles will relax
antagonists
opposing muscles
origin
immovable end of muscle
skeletal muscle
has origins and intersections
does all the work of moving
smooth muscle
non-striated
- undeveloped sarcoplasmic reticulum
- slower to contract and relax
synergist
helper muscles
insertion
contractions pulls this towards the origin
cardiac muscle
- whole structure contracts as a unit
- can contract for longer periods
- has extra calcium
trapezius
shoulder
sternocldomastoid
neck
gastrochnemius
calf
gluteus maximus
butt
deltoid
top of arm
