Anatomy - Muscle System Flashcards
What is the point of contact between the nerve ending and muscle fiber?
Neuromuscular junction
What is the chemical that is released when a nerve impulse passes through the neuromuscular junction for muscle contraction?
Acetylcholine
_____ is the end of the muscle attached to the more stationary bone.
Origin
_____ is the end of the muscle attached to the bone undergoing the greatest movement.
Insertion
_______ contract to stabilize.
Synergists
______ yields to agonist.
Antagonists
The ______ is the muscle that is primarily responsible for a particular movement.
Prime mover
There are ___ types of muscle.
3
What occurs in an isometric muscle contraction?
The length of the muscle does not change but the amount of tension increases during the contraction process
What occurs in an isotonic contraction?
The amount of tension produced by the muscle is constant during contraction but the muscle length changes
What are the 3 types of muscle?
Skeletal
Cardiac
Smooth
Sternocleidomastoids are located?
From ear to manubrium
Trapezius muscles are located?
Shoulders
Where are the deltoids located?
Outside of shoulder socket
Pectoralis major is located?
Under breasts
