PSIO 201 Lecture Notes - Lecture 3: Myoglobin, Motor Unit, Anaerobic Glycolysis

• School: University of Arizona
• Department: Physiology
• Course: PSIO 201
• Professor: Claudia Stanescu, Douglas Keen

Document Summary

List and describe the specific functions of skeletal muscle a. Insertion is the place where the muscle ends: muscle action when the insertion moves toward the origin c. i. Flexion of the forearm when lifting weights the origin stays still and the insertion moves toward the origin: reverse muscle action (rma) when the origin moves toward the insertion d. i. Flexion of the forearm when doing pull ups the insertion stays still and the origin comes up to the insertion. List and describe the three classes of levers, giving examples of each: first class effort, fulcrum, load flexion of the head effort is the muscle, fulcrum is the cervical vertebrae, and the load is the face. Scissors: second class fulcrum, load, effort plantar flexion-- toes are the fulcrum, tarsus is the load, gastrocnemius is the effort. Prime mover: antagonist-muscle which opposes the action of the agonist c. Synergist- assists the agonist in making the motion more efficient c. i.