29 terms

Terms/Vocab Muscle Test

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Aerobic Respiration
requires oxygen to be present to create ATP
Epimyosin
closely surrounds skeletal muscle
Steroids
creates larger muscles, but lots of problems :)
Flexor
muscle that bends a limb
Actin
thin filaments, outer part of sarcomere, causes movement
Resistance
key in making muscles contract with as much force as possible
Perimyosin
seperates muscle into small compartments
Flaccid
soft and hanging loosely
Origin
attaches to immovable bone
Myosin
inner section of sarcomere, thick filaments, extend and contracts
Isometric
Holds position
Endomyosin
connective tissue layer
Acetlycholine (ACH)
axon terminals of nerve release ACH
Insertion
attaches to movable bone
Sliding Filament Theory
myosin heads attach and detach to actin repeatedly; each time pulling on actin; muscle contracts and expands
Isotonic
produces movement
Synergists
stabilizes joints when moving certain muscles
Cardiac
involuntary, pumps blood
Fatigue
occurs when anaerobic respiration causes lactic acid
Antagonists
bring muscle to original position
Smooth
located in hollow internal organs, involuntary movement
Lactic Acid
released when muscle does not recieve enough oxygen and
Extensor
muscle that straightens limb
Skeletal
connected directly to bones, voluntary movement
Aerobic Exercise
cardio, running, cycling, endurance based
Anaerobic Exercise
lifting weights, sprinting; high intensity in short bursts of time
Sarcomere
one muscle unit of actin and myosin
Rigor Mortis
after death, partial contraction, increase in Ca+2 and decrease in ATP, prevents relaxation, actin and myosin remain linked until muscles decompose
Neuromuscular Junction
where nerve and muscle almost meet