ANATOMY & PHYSIOLOGY LL W/CONNECT ACCESS
ANATOMY & PHYSIOLOGY LL W/CONNECT ACCESS
4th Edition
ISBN: 9781265521363
Author: McKinley
Publisher: MCG
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Chapter 9.6, Problem 16WDYL
Summary Introduction

To analyze:

The position of the fulcrum, resistance, and effort vary in first-class, second-class, and third-class levers.

Introduction:

A level is a rigid, elongated object that helps in the movements of the body parts. Muscles and bones together make a lever. The levers are divided into three classes, first, second and third. There is a fixed point around which the levers move. Examples of a lever are a seesaw, scissors, bottle openers, nutcrackers, human arms, legs, etc.

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Students have asked these similar questions
What class of lever is described by the following activities: (1) the soleus plantar flexing the foot; (2) the deltoid abducting the arm; (3) the triceps brachii extending the forearm during push-ups?
Compare and contrast first-, second-, and third-class levers
What is an example of multiple lever types in the body during the same movement?

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Chapter 7 - Human Movement Science; Author: Dr. Jeff Williams;https://www.youtube.com/watch?v=LlqElkn4PA4;License: Standard youtube license