Body movements
Decreasing angle of a joint
flexion
Found in the heart
Cardiac
Outermost layer of connective tissue
Epimysium
Names of the thick and thin filaments (respectively)
Myosin and Actin
One neuron and all the muscles in stimulates
Motor unit
opposition
Nonstriated cells
Smooth muscle
Bundle of muscle fibers
Fascicle
Neurotransmitter that stimulates muscles to contract
Acetylcholine
Formed when myosin heads attach to the thin filament during muscle contraction
Cross bridge
Opposite of abduction
Adduction
Voluntary muscle cells
Skeletal muscle cells
Layer that surrounds a fascicle
Perimysium
Names for the alternating light and dark bands in striated muscle (respectively)
I and A
What ion triggers binding of myosin heads to actin filaments, which allows myosin heads to pull on the thin filaments and cause them to slide
Calcium
Pushing against an immovable wall generates this type of muscle contraction
Isometric
Which cells are fusiform in shape?
Smooth muscle
Connective tissue layer that surrounds individual muscle fibers
Endomysium
Sarcoplasmic reticulum
Electrical current that travels down a muscle cell
Action potential
Molecule that can resupply phosphate groups to ATP for a short period of time
Creatinine phosphate (CP)
Cellular process that produces lactic acid in order to regenerate ATP
anaerobic glycolysis
Cell membrane of a muscle cell
Sarcolemma
The contractile unit of muscle cells
Sarcomere
Sustained, smooth contraction in a whole muscle with no evidence of relaxation
Fused tetanus