PSIO 201 Study Guide - Midterm Guide: Adipocyte, Calmodulin, Strength Training

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

Document Summary

Lecture 16 introduction to the muscular system. List and describe the specific functions of skeletal muscle. Define the terms origin and insertion and describe the action and the reversed action of a muscle using these terms. Origin: place where the muscle starts on a bone stays stationary. Insertion: place where muscle ends on a bone - moves toward the origin. Muscle action: flexion: decreasing angle at joint, extension: increasing angle at joint, abduction: movement away from midline, adduction: movement towards midline. Reversed muscle action: when insertion is anchored, origin moves towards insertion (i. e. pull ups) List and describe the three classes of levers, giving examples of each. Fulcrum fixed point around which the bone moves joint. Load: effort fulcrum load (scissors, not many examples in human body, extension of head. Second class lever: fulcrum load effort (barrow, not many examples in human body, dorsiflexion of foot. Third class lever: fulcrum effort load (tweezers, most common, flexion of forearm.