Chapter 11 Flashcards
The fascicles are parallel to the long axis of the muscle.
Parallel Muscle
The muscle fascicles extending over a broad area converge on a common attachment.
Convergent Muscle
The fascicles form a common angle with the tendon.
Pennate Muscle
The fascicles are concentrically arranged around an opening or a recess.
Circular Muscle/Sphincter
A rigid structure - such as a board, a crowbar, or a bone - that moves on a fixed point called the fulcrum.
Lever
The point on which a lever is fixed. Each joint is one of these.
Fulcrum
In a skeletal muscle, the point of attachment which does not change position when the muscle contracts; usually defind in terms of movements from the anatomical position.
Origin
A point of attachment of a muscle; the end that is easily movable.
Insertion
A muscle responsible for a specific movement.
Agonist/Prime Mover
A muscle that opposes the movement of an agonist.
Antagonist
A muscle that assists a pine mover in performing its primary action.
Synergist
A type of synergist that assists an agonist by preventing movement at another joint and thereby stabilizing the origin of the agonist.
Fixator
The formation of fibrous connective tissue; in muscles, the replacement of muscle tissue by fibrous connective tissue makes muscles weaker and less flexible.
Fibrosis
