Anatomy & Physiology
3rd Edition
ISBN: 9781259398629
Author: McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher: Mcgraw Hill Education,
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Question
Chapter 9, Problem 15DYB
Summary Introduction
To compare:
Also contrast first, second, and third class of levers.
Concept introduction:
A lever is defined as an elongated rigid object that rotates around a fixed point called fulcrum. They have the ability to change the speed and distance of movement which is produced by force, the direction of applied force or the force of strength.
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Differentiate between the arrangement of elements (load, fulcrum, and effort) in first-, second-, and third-class levers.
Define a lever.
classify any given joint action as a first-, second-, or thirdclass lever;
Chapter 9 Solutions
Anatomy & Physiology
Ch. 9.1 - Prob. 1LOCh. 9.1 - Prob. 2LOCh. 9.1 - Prob. 3LOCh. 9.1 - What is the relationship between mobility and...Ch. 9.1 - Are all fibrous joints also synarthroses? Explain...Ch. 9.2 - Prob. 4LOCh. 9.2 - Prob. 3WDLCh. 9.2 - LEARNING OBJECTIVE
5. Describe the location and...Ch. 9.2 - Prob. 4WDLCh. 9.2 - Prob. 6LO
Ch. 9.2 - Prob. 5WDLCh. 9.3 - Prob. 7LOCh. 9.3 - Prob. 1WDTCh. 9.3 - Prob. 6WDLCh. 9.3 - Prob. 8LOCh. 9.3 - Prob. 7WDLCh. 9.4 - Prob. 9LOCh. 9.4 - Prob. 10LOCh. 9.4 - Prob. 11LOCh. 9.4 - What are the basic characteristics of all types of...Ch. 9.4 - Prob. 9WDLCh. 9.4 - LEARNING OBJECTIVE
12. Explain the movement of a...Ch. 9.4 - Prob. 13LOCh. 9.4 - Prob. 2WDTCh. 9.4 - Prob. 10WDLCh. 9.5 - Prob. 14LOCh. 9.5 - Prob. 11WDLCh. 9.5 - Prob. 15LOCh. 9.5 - Prob. 16LOCh. 9.5 - Prob. 17LOCh. 9.5 - Prob. 3WDTCh. 9.5 - How do flexion and extension differ? What...Ch. 9.5 - Prob. 18LOCh. 9.5 - Prob. 13WDLCh. 9.5 - Prob. 19LOCh. 9.5 - Prob. 14WDLCh. 9.6 - Prob. 20LOCh. 9.6 - Prob. 21LOCh. 9.6 - What is the difference between the effort arm and...Ch. 9.6 - LEARNING OBJECTIVE
22. Compare and contrast the...Ch. 9.6 - Prob. 16WDLCh. 9.7 - Prob. 23LOCh. 9.7 - Prob. 24LOCh. 9.7 - Prob. 17WDLCh. 9.7 - Prob. 25LOCh. 9.7 - LEARNING OBJECTIVE
26. Explain why the...Ch. 9.7 - Prob. 18WDLCh. 9.7 - Prob. 27LOCh. 9.7 - Prob. 28LOCh. 9.7 - Prob. 19WDLCh. 9.7 - Prob. 29LOCh. 9.7 - Prob. 30LOCh. 9.7 - How do the glenohumeral and hip joints compare...Ch. 9.7 - Prob. 31LOCh. 9.7 - Prob. 32LOCh. 9.7 - What are the functions of each of the...Ch. 9.7 - LEARNING OBJECTIVE
33. Describe the talocrural...Ch. 9.7 - Prob. 22WDLCh. 9.8 - Prob. 34LOCh. 9.8 - Prob. 35LOCh. 9.8 - Prob. 23WDLCh. 9 - _____ 1. The greatest range of mobility of any...Ch. 9 - _____ 2. A movement of the foot that turns the...Ch. 9 - _____ 3. A _______ is formed when two bones...Ch. 9 - Prob. 4DYBCh. 9 - Prob. 5DYBCh. 9 - Prob. 6DYBCh. 9 - Prob. 7DYBCh. 9 - Prob. 8DYBCh. 9 - Prob. 9DYBCh. 9 - Prob. 10DYBCh. 9 - Prob. 11DYBCh. 9 - Prob. 12DYBCh. 9 - List and describe all joints that are functionally...Ch. 9 - How do a hinge joint and a pivot joint compare...Ch. 9 - Prob. 15DYBCh. 9 - Prob. 16DYBCh. 9 - Most ankle sprains are overinversion injuries....Ch. 9 - What are the main supporting ligaments of the...Ch. 9 - Prob. 19DYBCh. 9 - What are the similarities and differences between...Ch. 9 - Prob. 1CALCh. 9 - Prob. 2CALCh. 9 - Prob. 3CALCh. 9 - Prob. 4CALCh. 9 - Prob. 5CALCh. 9 - During soccer practice, Erin tripped over the...Ch. 9 - Prob. 2CSLCh. 9 - Jackie visits her physician because she is...
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- Name the three types of lever systems and indicate the arrangement of effort, fulcrum, and load in each. Also note the advantages of each type of lever system.arrow_forwardDefine Flexors? Give one example of it?arrow_forwardWhat 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?arrow_forward
- Which of the following is the antagonist when using a hand grip strengthener? Flexor Digitorum superficialis Extensor Digitorum Longus Palmaris Longus Extensor Digitorumarrow_forwardWhat benefit is provided by a lever that operates at a mechanical advantage?arrow_forwardDiscuss the functions of the different types of levers found in our body. How do these different types of levers make our body more useful. Explain each type of lever, the position of the fulcrum, load, and applied force and give an example of each.arrow_forward
- Injury to the flexor carpi ulnaris would impair which two movements?arrow_forwardWhat are two factors which allow the gastrocnemius and soleus muscles to generate greater plantar flexion torque than all the other muscles capable of plantarflexion?arrow_forwardWhat effect does the amount of trunk flexion and barbell placement have on the knee and hip muscles throughout the squat?arrow_forward
- Where are the effort, fulcrum, and resistance in the act of dorsiflexion? What class of lever does the foot act as during dorsiflexion? Would you expect it to have a mechanical advantage greater or less than 1.0? Why?arrow_forwardTo answer the following questions utilize the attached picture. A. What muscles are acting on the knee from B to C? B. What classification of lever is being demonstrated in this exercise? C. Where is the resistance occurring? D. Where is the point of force application at the knee? E. Utilizing the rules of the lever system, how can this exercise be made easier? (You can’t simply remove the cuff)arrow_forwardCorrectly label the flexors of the wrist and hand.arrow_forward
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