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EXSC 415: Neuromuscular Fitness
Terms in this set (19)
What is the most common lever system in the body? The force of the resistance arm is greater than the force of movement.
Third class levers
a sheath of fibrous elastic tissue surrounding a muscle.
The connective tissue that surrounds fascicles.
Bundle of muscle fibers
actin and myosin
Connective tissue surrounding a muscle fiber
Troponin and tropomyosin
Contraction Inhibiting Proteins within each sarcomere that are attached to actin
Organelle of the muscle fiber that stores calcium.
Also called transverse tubules, these are deep invaginations of the plasma membrane found in skeletal and cardiac muscle cells. These invaginations allow depolarization of the membrane to quickly penetrate to the interior of the cell.
The expanded saclike regions of a muscle fiber's sarcoplasmic reticulum; store and release calcium, which plays a key role in triggering muscle contraction
Nerve cells that carry impulses towards the central nervous system at the dorsal horn
Nerve cells that conduct impulses away from the central nervous system at the ventral horn
What are the four nerve groups?
Alpha, beta, delta, and C
Maximal force in a single voluntary contraction
No change in length; no change in position of the object of resistance. Only specific to the joint angle trained and not through the whole ROM
Change in muscle length; resistance is moved. Consists of concentric and eccentric movements
employ a fixed velocity with variable resistance
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