Anatomy & Physiology: An Integrative Approach
2nd Edition
ISBN: 9780078024283
Author: Michael McKinley Dr., Valerie O'Loughlin, Theresa Bidle
Publisher: McGraw-Hill Education
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Question
Chapter 9.5, Problem 12WDYL
Summary Introduction
To determine:
The position of the fulcrum, resistance, and the effort in the first class, second class, and the third class levers.
Concept introduction:
Fulcrum, resistance, and the effort are the parts of lever which is an elongated, rigid object. Lever is divided into three classes based on the position of fulcrum, resistance, and the effort.
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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?
Chapter 9 Solutions
Anatomy & Physiology: An Integrative Approach
Ch. 9.1 - What is the relationship between mobility and...Ch. 9.1 - Are all fibrous joints also synarthroses? Explain...Ch. 9.2 - Prob. 3WDYLCh. 9.2 - Prob. 4WDYLCh. 9.2 - Prob. 5WDYLCh. 9.3 - Prob. 6WDYLCh. 9.3 - Prob. 7WDYLCh. 9.4 - What are the basic characteristics of all types of...Ch. 9.4 - Prob. 9WDYLCh. 9.4 - Prob. 10WDYL
Ch. 9.5 - What is the difference between the effort arm and...Ch. 9.5 - Prob. 12WDYLCh. 9.6 - Prob. 13WDYLCh. 9.6 - How do flexion and extension differ? What...Ch. 9.6 - Prob. 15WDYLCh. 9.6 - Prob. 16WDYLCh. 9.7 - Prob. 17WDYLCh. 9.7 - Prob. 18WDYLCh. 9.7 - Prob. 19WDYLCh. 9.7 - How do the glenohumeral and hip joints compare...Ch. 9.7 - What are the functions of each of the...Ch. 9.7 - Prob. 22WDYLCh. 9.8 - Prob. 23WDYLCh. 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. 4DYKBCh. 9 - Prob. 5DYKBCh. 9 - Prob. 6DYKBCh. 9 - Prob. 7DYKBCh. 9 - Prob. 8DYKBCh. 9 - Prob. 9DYKBCh. 9 - Prob. 10DYKBCh. 9 - Prob. 11DYKBCh. 9 - Prob. 12DYKBCh. 9 - List and describe all joints that are functionally...Ch. 9 - How do a hinge joint and a pivot joint compare...Ch. 9 - Prob. 15DYKBCh. 9 - Prob. 16DYKBCh. 9 - Most ankle sprains are overinversion injuries....Ch. 9 - What are the main supporting ligaments of the...Ch. 9 - Prob. 19DYKBCh. 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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- 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_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 benefit is provided by a lever that operates at a mechanical advantage?arrow_forward
- Define a lever.arrow_forwardDefine Flexors? Give one example of it?arrow_forwardIf your biceps brachii muscle attaches to your forearm 2 inches below your elbow, the distance from the elbow to the palm of your hand is 18 inches, and you lift a 20 pound weight, how much pull must your muscle exert to achieve elbow flexion? If your biceps brachii muscle attaches to your forearm 2 inches below your elbow, the distance from the elbow to the palm of your hand is 18 inches, and you lift a 20 pound weight, how much pull must your muscle exert to achieve elbow flexion? hhharrow_forward
- What effect does the amount of trunk flexion and barbell placement have on the knee and hip muscles throughout the squat?arrow_forwardA muscle that helps an agonist by causing a similar movement or by stabilizing a joint over which the agonist acts is (a) an antagonist, (b) a prime mover, (c) a synergist, (d) a fulcrum.arrow_forwardName 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_forward
- Which of the following is the antagonist when using a hand grip strengthener? Flexor Digitorum superficialis Extensor Digitorum Longus Palmaris Longus Extensor Digitorumarrow_forwardIs the biceps brachii an extensor or a flexor?arrow_forwardWhich is not a hip flexor? a) iliopsoas muscle b) Gracilis muscle c) Adductor magnus muscle d) Rectus femoris musclearrow_forward
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