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 3CRCAQ
Assume you are trying to lift a heavy weight off the ground with your right hand. Explain why it will be easier to flex your forearm at the elbow when your forearm is supinated than when it is pronated.
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Maximal muscle force changes continuously throughout the elbow flexion according to the joint angle.
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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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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
- A good way to work your biceps would be to: A) Laying on back with arms crossed and curling the chin to the knees.B) Arms straight (palms forward) holding a weight; Curl the wrist to the shoulder.C) Arm in L position looking at the ground (with weight); Straighten the arm at the elbowD) Arms straight (holding weight); Keep the arms straight and extend them outarrow_forwardWhat type of contraction occurs in wrist extension?arrow_forwarddoes the radius and the unla rotate in the same direction when the triceps or biceps contract? Explainarrow_forward
- Proper positioning is critical to the prevention of pressure injuries and contractures. When the patient is in the supine position, with knees bent for prolonged periods of time, what is a common contracture that you want to prevent? (Assume hips are in a neutral position.) Knee extension contracture Dorsiflexion contracture Knee flexion contracture Hip internal rotation contracturearrow_forwardBriefly explain why it is easier to swing the leg through in the swing phase of sprinting with the knee flexed as opposed to extended.arrow_forwardWhich of the following is the antagonist when using a hand grip strengthener? Flexor Digitorum superficialis Extensor Digitorum Longus Palmaris Longus Extensor Digitorumarrow_forward
- With a laboratory partner, determine how and why maintaining full flexion of all the fingers is impossible when passively moving the wrist into maximal flexion. Is it also difficult to maintain maximal extension of all the finger joints while passively taking the wrist into full extension?arrow_forwardList all six possible movements that can occur at the shoulder joint and name the prime mover(s) of each movement. Then name their antagonists.arrow_forwardHow much force must be produced by the biceps brachii, attaching at 90? to the radius at 3 cm from the center of rotation at the elbow joint, to support a weight of 200 N held in the hand at a distance of 30 cm from the elbow joint? (Neglect the weight of the forearm and hand, and neglect any action of other muscles)arrow_forward
- When the weight is traveling upwards, what are the agonist(s) for the action occurring at the wrist joint? must watch video clip to answer https://www.youtube.com/watch?v=6pWu4Xko9qM a. Flexor carpi radialis, Extensor carpi radialis brevis, Extensor carpi radialis longus, Extensor pollicis longus, Abductor pollicis longus b. Extensor carpi ulnaris, extensor carpi radialis brevis, extensor carpi radialis longus c. Flexor carpi ulnaris, Extensor carpi ulnaris d. Flexor carpi radialis, Palmaris longus, Flexor carpi ulnarisarrow_forwardWhen you flex your biceps brachii while doing “biceps curls,” what is the type of movement?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
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