Muscle Fibers
This is the most basic functional unit of a muscle fiber.
What is the sacromere?
This structure is the most damaged when a sprain occurs.
What is a ligament?
This causes the muscles' motion.
What is an agonist?
This type of muscle contraction lengthens the muscle.
What is eccentric contraction?
This is the product of muscular force and velocity of the muscle shortening.
What is Muscular Power?
This muscle fiber is the most fatigue-resistant.
What are type l muscle fibers?
This is a partial tear of a ligament with moderate instability.
What is a grade 2 sprain?
This prohibits overall motion of the movement.
What is an antagonist?
This type of contraction does not cause a change in length.
These are the two filaments in the sarcomere.
What are actin and myosin?
This muscle fiber has the fastest contraction and is fatigue resistant.
What are type IIB muscle fibers?
This occurs when unaccustomed activities are performed.
What is DOMS?
Define a neutralizer muscle.
What is stopping unwanted motion?
This is a single contraction-relaxation cycle from one stimulus.
What is a twitch?
This is the ability of the muscle to exert tension over a period of time.
What is muscle endurance?
Type I muscle fibers primarily use this energy system.
What is aerobic/oxidative metabolism?
The shoulder is more prone to dislocation than the hip due to:
What are high mobility (ROM) and low stability of the shoulder?
During an arm curl, which muscles are the agonist and antagonist?
Agonist : biceps
Antagonist: triceps
This measures and records electric activity of skeletal muscles.
What is EMG?
Describe the pennation angle.
What is the angle of muscle fibers relative to the tendon?
This fiber is considered fast oxidative.
What is type IIA muscle fibers?
This occurs structurally in a grade 3 sprain.
What is a complete tear of a ligament?
This occurs when the multijoint muscles are unable to stretch over both joints.
What is passive insufficiency?
This theory allows for muscle contraction.
What is sliding filament theory?
Define "mechanical delay."
What is the delay between electrical signals and actual force production?