Human Anatomy
9th Edition
ISBN: 9780135168059
Author: Marieb, Elaine Nicpon, Brady, Patricia, Mallatt, Jon
Publisher: Pearson Education, Inc.,
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Chapter 11, Problem 5CYU
Most skeletal muscles of the body operate at a mechanical disadvantage. What are the advantage of this arrangement?
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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 are the structural and functional differences between slow and fast muscle?arrow_forwardYou are training athletes for the 100-meter dash. They need muscles specialized for speed and strength, not endurance. What muscle characteristics would your training regimen aim to develop? How would you alter it to train a long-distance swimmer?arrow_forwardWhat is the function of the sarcoplasmic reticulum in muscle cell contraction?arrow_forward
- What is a motor unit? Why does a rapid series of muscle twitches yield a stronger overall contraction than a single twitch?arrow_forwardHow do actin and myosin interact in a sarcomere to bring about muscle contraction? What roles do ATP and calcium play?arrow_forwardWhy can smooth muscles contract over a wider range of resting lengths than skeletal and cardiac muscle?arrow_forward
- Skeletal muscles can only produce a mechanical force as they are contracted, but a leg flexes and extends while walking. How can muscles perform this task?arrow_forwardMovement in the skeletal muscles in the body is affected by physiological mechanisms known as levers. There are three parts of levers known as the effort, fulcrum, and load. Please explain how levers, along with its parts allow the arm to move.arrow_forwardidentify the incorrect statement about skeletal muscle (A) the epimysium, perimysium, and endomysium form the tendon of the muscle (B) when putting down a weight (extending the elbow) the biceps brachii muscle is doing a concentric isotonic contraction (C) when doing a knee flexion, the hamstrings muscle group is the agonist (D) holding a plank is an example of an isometric contractionarrow_forward
- As skeletal muscle contracts, one or more bands of the sarcomere become narrower and disappear, and one or more of them emain the same width. Which bands will change—A, H, or I—and why?arrow_forwardWhat type of muscle fibers would you expect to find in the leg muscles of a well-trained marathon runner?arrow_forwardWatch this video (http://openstaxcollege.org/l/micromacro) to learn more about macro- and microstructures of skeletal muscles. (a) What are the names of the “junction points” between sarcomeres? (b) What are the names of the “subunits” within the myofibrils that run the length of skeletal muscle fibers? (c) What is the “double strand of pearls” described in the video? (d) What gives a skeletal muscle fiber its striated appearance?arrow_forward
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