Skeletal Muscle Structure
This is the smallest functional contractile unit of a muscle fiber
What are Sarcomeres
This protein forms the thick filaments.
What is myosin?
This type of contraction occurs when the muscle shortens.
What is a concentric contraction?
The deltoid is an example of this muscle shape.
What is a pennate muscle?
These sensory receptors detect changes in muscle length.
What are muscle spindles?
This connective tissue attaches muscle to bone
What is a Tendon?
This molecule provides the energy for muscle contraction.
What is ATP?
A motor unit consists of one motor neuron and these.
What are muscle fibers?
This muscle shape has fibers running parallel to the long axis.
What is a fusiform/longitudinal?
These receptors are located within tendons.
What are Golgi tendon organs?
These are the borders between sarcomeres
What are Z-disk/Z-Lines/Z-bands
This mineral ion binds to troponin to begin contraction.
What is calcium?
This type of contraction occurs when tension develops but the muscle length stays the same.
What is an isometric contraction?
In this muscle shape, fibers attach diagonally to a tendon on both sides.
What is a bipennate muscle?
This reflex helps prevent muscles from over lengthening.
What is the stretch reflex?
This connective tissue surrounds the entire muscle.
What is the epimysium?
This theory explains how muscles shorten during contraction.
What is the sliding filament theory?
This principle states that smaller motor units are recruited before larger ones.
What is the size principle?
This muscle shape has a longer range of motion.
What are Fusiform muscles?
Golgi tendon organs primarily monitor this.
What is muscle tension?
This is the name of a bundle of Muscle Fibers
What are Fascicles?
Sliding Filament Theory occurs during what phase of an exercise
What is a concentric muscle contraction.
This occurs when additional motor units are activated to increase force production.
What is motor unit recruitment? or "The Size Principle"
This muscle shape as a higher velocity contraction speed.
What are fusiform muscles?
This inhibition state that contraction of an agonist results in relaxation of the antagonist muscle.