ANAT 101 Lecture Notes - Lecture 11: Masseter Muscle, Agonist, Temporal Muscle

62 views5 pages

Document Summary

Skeletal muscles make movement by exerting force on the tendons which then are attached to and pull on bones to make movement. Reverse muscle action (rma): actions are reversed in the body; origin and insertion switch. Origin: the attachment of a muscles tendon to the stationary bone: proximal. Insertion: the attachment of the muscles other tendon to the movable bone: distal, pulled toward the origin. Belly: fleshy portion of muscle between the tendons: ex: triceps. Bones are levers and joints are fulcrums. Lever: rigid structure that can move around a fixed point (fulcrum: lever is acted on by the effort (causes movement) and the load/ resistance (opposes movement) Load: weight of body part being moved or the resistance the body part is trying to overcome. Ex: bicep curl: elbow is the fulcrum, weight of forearm + dumbbell is the load, force of contraction of the bicep brachii pulling the forearm up is the effort.

Get access

Grade+
$40 USD/m
Billed monthly
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
10 Verified Answers
Class+
$30 USD/m
Billed monthly
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
7 Verified Answers

Related Documents

Related Questions