Human Anatomy (8th Edition)
8th Edition
ISBN: 9780134243818
Author: Elaine N. Marieb, Patricia Brady Wilhelm, Jon B. Mallatt
Publisher: PEARSON
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Textbook Question
Chapter 11, Problem 4CYU
In a skeletal/muscular lever system, what structure is the fulcrum?
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Which of the three lever systems involved in muscle mechanics would be the fastest lever—first-, second-, or third-class?
A 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.
What is an example of multiple lever types in the body during the same movement?
Chapter 11 Solutions
Human Anatomy (8th Edition)
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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- Explain the role of agonist, antagonist, synergist, and fixator muscles. Give two examples of each.arrow_forwardDifferentiate between the arrangement of elements (load, fulcrum, and effort) in first-, second-, and third-class levers.arrow_forwardDistinguish between (a) direct and indirect muscle attachments and (b) a tendon and an aponeurosis.arrow_forward
- Distinguish between an agonist, antagonist, and synergist muscle.arrow_forwardmyofibril is only found in straight muscles. True or falsearrow_forwardContraction elicited by a single brief stimulus is called (a) a twitch, (b) wave summation, (c) multiple motor unit summation, (d) fused tetanus.arrow_forward
- Describe the roles of the following in muscle action:agonist, antagonist, synergist, fixator, and prime mover.arrow_forwardFor a given movement, differentiate specific muscles that function as prime mover, antagonist, synergist or fixator.arrow_forwardJacob is competing in a chin-up competition. What type of musclecontractions are occurring in his biceps muscles immediately after he grabs the bar? As his body begins to move upward toward the bar? When his body begins to approach the mat?arrow_forward
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