Protein that makes up most of the thin myofilament in a sarcomere muscle fiber.

• Fascicle

• Twitch

• Actin

• Motor unit

Change in voltage of a cell membrane in response to a stimulus that results in transmission of an electrical signal unique to neurons & muscle fibers

• Neurotransmitter

• Myosin

• Fibrosis

• Action potential

Loss of structural proteins from muscle fibers

• Excitability

• Sarcopenia

• Atrophy

• Wave summation

Muscle contraction that shortens the muscle to move a load

• Concentric contraction

• Epimysium

• Creatine phosphate

• Hypertrophy

Ability to shorten(contract) forcibly

• Elasticity

• Contractility

• Synaptic cleft

• Extensibility

phosphagen used to store energy from ATP and transfer it to the muscle

• Extensibility

• Fascicle

• Creatine phosphate

• Myosin

Muscle contraction that lengths a muscle as the tension is diminished.

• Eccentric contraction

• Creatine phosphate

• Atrophy

• Actin

Ability to stretch and rebound.

• Contractility

• Concentric contraction

• Action potential

• Elasticity

Outer layer of Connective tissue around a skeletal muscle.

• Excitability

• epimysium

• Action Potential

• Fibrosis

Ability to undergo neural stimulation.

• Sarcoplasm

• Neurotransmitter

• Excitability

• Sarcolemma