HUMAN ANATOMY PKG >CUSTOM<
8th Edition
ISBN: 9781323572528
Author: Marieb
Publisher: Pearson Custom Publishing
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Textbook Question
Chapter 11, Problem 14RQ
Define and distinguish first-, second-, and third-class levers. Which types of levers operate at a mechanical advantage?
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Compare and contrast first-, second-, and third-class levers
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What benefit is provided by a lever that operates at a mechanical advantage?
Chapter 11 Solutions
HUMAN ANATOMY PKG >CUSTOM<
Ch. 11 - Name the fascicle arrangement in a muscle whose...Ch. 11 - Prob. 2CYUCh. 11 - Which types of leavers operate at a mechanical...Ch. 11 - In a skeletal/muscular lever system, what...Ch. 11 - Most skeletal muscles of the body operate at a...Ch. 11 - Prob. 6CYUCh. 11 - Prob. 7CYUCh. 11 - Biceps brachii and brachialis both flex the...Ch. 11 - A muscle that abducts the thigh would cross the...Ch. 11 - At most joints (the knee and ankle are...
Ch. 11 - Use your knowledge of word roots and the criteria...Ch. 11 - Prob. 12CYUCh. 11 - Prob. 13CYUCh. 11 - Prob. 14CYUCh. 11 - Prob. 15CYUCh. 11 - Describes the six movements possible at the...Ch. 11 - What muscle is the prime mover of dorsiflexion?...Ch. 11 - How do the lesser gluteals—gluteus medius and...Ch. 11 - Where is the linea alba located, and what muscles...Ch. 11 - Define the boundaries of the triangle of...Ch. 11 - Prob. 21CYUCh. 11 - Identify the body region where the following...Ch. 11 - Prob. 23CYUCh. 11 - Prob. 24CYUCh. 11 - Prob. 1RQCh. 11 - Prob. 2RQCh. 11 - Match the muscles in column B to their embryonic...Ch. 11 - The muscle that closes the eyes is (a) the...Ch. 11 - Prob. 5RQCh. 11 - Prob. 6RQCh. 11 - Prob. 7RQCh. 11 - Prob. 8RQCh. 11 - Prob. 9RQCh. 11 - Prob. 10RQCh. 11 - The major muscles used in the up portion of a...Ch. 11 - Prob. 12RQCh. 11 - Prob. 13RQCh. 11 - Define and distinguish first-, second-, and...Ch. 11 - (a) Name the four pairs of muscles that act...Ch. 11 - List all six possible movements of the humerus...Ch. 11 - (a) Name two forearm muscles that are both...Ch. 11 - (a) Name the lateral rotators of the hip. (b)...Ch. 11 - What is the functional reason why the muscle group...Ch. 11 - Define (a) a fascial compartment in a limb and (b)...Ch. 11 - Prob. 21RQCh. 11 - Prob. 22RQCh. 11 - Prob. 23RQCh. 11 - Deduce some characteristics of the following...Ch. 11 - For the following muscles, list one action of...Ch. 11 - (a) Define palpation. (b) Why is a knowledge of...Ch. 11 - Explain how one locates the proper site for...Ch. 11 - Prob. 28RQCh. 11 - Name the borders of the triangle of auscultation.Ch. 11 - Prob. 30RQCh. 11 - Prob. 1CRCAQCh. 11 - Prob. 2CRCAQCh. 11 - Assume you are trying to lift a heavy weight off...Ch. 11 - Prob. 4CRCAQCh. 11 - Prob. 5CRCAQCh. 11 - Based on its fascicle orientation, determine...Ch. 11 - Prob. 7CRCAQCh. 11 - What class of lever is described by the following...Ch. 11 - Walking to her car after her 65th birthday party,...Ch. 11 - An athletic trainer was examining a college...
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- What is an example of multiple lever types in the body during the same movement?arrow_forwardWhich of the three lever systems involved in muscle mechanics would be the fastest lever—first-, second-, or third-class?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
- 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_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_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_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_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_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
- Give an anatomical example of each class of levers andexplain why each example belongs in that classarrow_forwardFor a given movement, differentiate specific muscles that function as prime mover, antagonist, synergist or fixator.arrow_forwardWhat class of lever is an automobile steeringwheel?arrow_forward
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