Human Anatomy
9th Edition
ISBN: 9780135168059
Author: Marieb, Elaine Nicpon, Brady, Patricia, Mallatt, Jon
Publisher: Pearson Education, Inc.,
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Textbook Question
Chapter 11, Problem 17CYU
What muscle is the prime mover of dorsiflexion? Why is this motion important during walking?
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Chapter 11 Solutions
Human Anatomy
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 - 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 - Prob. 9CYUCh. 11 - Prob. 10CYU
Ch. 11 - Prob. 11CYUCh. 11 - Prob. 12CYUCh. 11 - Prob. 13CYUCh. 11 - Use your knowledge of word roots and the criteria...Ch. 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 - Prob. 6SAEQCh. 11 - Define (a) a fascial compartment in a limb and (b)...Ch. 11 - Name two muscles in each of the following...Ch. 11 - Prob. 9SAEQCh. 11 - Prob. 10SAEQCh. 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. 15SAEQCh. 11 - Name the borders of the triangle of auscultation.Ch. 11 - Prob. 17SAEQCh. 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 a motor unit? Why does a rapid series of muscle twitches yield a stronger overall contraction than a single twitch?arrow_forwardWhat type of lever is the vastus medialis? Support your answer with a free body diagram. The vasti muscles are used both for sit-to-stand AND stand-to-sit movements. Which of these two tasks represents a concentric contraction and which represents an eccentric contraction? Which muscle (vastus lateralis or medialis) do you think is more important for doing a slow, controlled stand-to-sit transition? If you witnessed your grandfather "plopping" (doing an uncontrolled sit) into a chair, would you recommend giving him eccentric or concentric strengthening exercises for his vasti muscles? Justify your answer.arrow_forwardHow can the deltoid muscles both extend and flex the arm? Aren’t these antagonistic movements?arrow_forward
- 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? 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_forwardWhen shooting a soccer ball, which muscles are agonist and which are antagonist, stabilizers, and/or neutralizers?arrow_forwardWhat is an example of multiple lever types in the body during the same movement?arrow_forward
- Which of the three lever systems involved in muscle mechanics would be the fastest lever—first-, second-, or third-class?arrow_forwardexplain the role played by the stretch reflex around the ankle joint in maintaining the balance of a ballet dancer standing on points.arrow_forwardWhat type of fiber architecture do the sartorius muscles exhibit?arrow_forward
- describe which motions and muscles in the right elbow, forearm, wrist, and hand are responsible for turning a doorknob clockwise and pushing open a door. What if the motion was reversed and you had to turn the knob counter-clockwise and pull open the door?arrow_forwardWhat effect does fascicle arrangement have on a muscle’s action?arrow_forwardFor a given movement, differentiate specific muscles that function as prime mover, antagonist, synergist or fixator.arrow_forward
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