Skeletal Musculature Flashcards
Traditionally, how is the origin of a muscle defined?
The origin is traditionally it’s proximal attachment to a bone.
Traditionally, how is the insertion of a muscle defined?
The insertion is traditionally it’s distal attachment to the bone.
Where are fleshy attachments most often found?
The proximal end of the muscle.
Describe fleshy attachments.
Muscle fibers are directly affixed to the bone and spread over a wide area to distribute force.
Describe fibrous attachments.
Muscle fibers are continuous with both the muscle sheaths and the connective tissue surrounding the bone.
Agonist
Muscle most directly involved in bringing about a movement.
Antagonist
Muscle that can slow down or stop a movement.
Synergist
Assists indirectly in a movement
Define mechanical advantage.
The ratio of the moment arm through which an applied force acts to the moment arm through which a resistive force acts.
Define muscle force.
Force generated by biomechanical activity.
Define resistive force.
Force generated by a source external to the body.
Define torque.
The degree to which a force tends to rotate an object about a specified fulcrum.
