Intro to Muscular System

Intro to Muscular System - Intro to Muscular System...

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Intro to Muscular System 03/03/2008 10:02:00 Functions Locomotion Facial Expression Posture Regulation of body temp Types Skeletal Muscle o Voluntary Requires nervous input Some are automatic Most require conscious thought o Examples Diaphragm Dome shaped muscle In thorax Allows you to breathe Voluntary but automatic Can hold breath Basics of human movement
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Basics of Human Movement 03/03/2008 10:02:00 Muscles can only PULL on bones Origin o Place where muscle starts Remains stationary o Insertion Ending of muscle on a bone Moves toward the origin Levers and Fulcrums Muscles act to facilitate movement o At a fulcrum Joint acts as fulcrum Fixed point around which lever moves o By enacting force on a lever Bones act as levers Rigid bar Effort and load act on the lever Types of levers o 1 st  class levers Not many in the human body Atlas and Occipital chondyles Fulcrum is between effort and load See saw LFE o 2 nd  class levers
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This note was uploaded on 04/03/2008 for the course PSIO 201 taught by Professor Stanescu during the Spring '08 term at University of Arizona- Tucson.

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Intro to Muscular System - Intro to Muscular System...

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