LAB MANUAL FOR HUMAN A&P MAIN VERSION
4th Edition
ISBN: 9781266871016
Author: Martin
Publisher: MCG
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Textbook Question
Chapter 23, Problem 5.2CT
Tendons of the rotator cuff muscles hold the head of the humerus to the glenoid cavity of the scapula. What agonist (prime mover) of arm abduction are these muscles assisting?
Why is their synergistic action important, particularly in sports where there is repetitive throwing or rotation of the arm (e.g., pitching, cricket, swimming)?
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The right levator scapula is contracted with the intent to only elevate the scapula, no other actions at the scapula are desired. Please complete the following two part question
What are all of the muscles that could act as a synergist/neutralizer during this motion?
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Which of the following muscles resist the actions of the supination of the forearm
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Which of the following muscles causes flexion at the wrist?
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If a scapula is protracted which of the following muscles is in a shortened position?
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The cyclic pattern of the engagement of the muscle and joints of the body during walking is known as the
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* These muscles (and subscapularis) form the rotator cuff which is a critical stabilizing element
for the glenohumeral joint (shoulder joint). Thus, one action for each of these muscles is to
stabilize the shoulder joint. Examine the rotator cuff muscles in the cadaver and see if you can
determine where the tendons incompletely surround the head of the humerus. What clinical
significance does this have?
Chapter 23 Solutions
LAB MANUAL FOR HUMAN A&P MAIN VERSION
Ch. 23 - Chest and shoulder muscles that move the arm at...Ch. 23 - Muscles located in the arm that move the forearm...Ch. 23 - Rotator cuff muscles all have origins on the a....Ch. 23 - Which of the following is not a rotator cuff...Ch. 23 - The belly of the muscle is usually ________ the...Ch. 23 - The belly of the flexor digitorumprofundus muscle...Ch. 23 - There are more muscles that move the forearm than...Ch. 23 - The action of the brachialis muscle is flexion of...Ch. 23 - FIGURE 23.7 Label the deep anterior muscles of the...Ch. 23 - Label the muscle of respiration of the posterior...
Ch. 23 - FIGURE 23.9 Identify the posterior muscles of the...Ch. 23 - FIGURE 23.10 Label the anterior muscles of the...Ch. 23 - FIGURE 23.11 Identify the anterior muscles of the...Ch. 23 - Match the muscles in column A with the actions in...Ch. 23 - Name the muscle indicated by the following...Ch. 23 - Name the muscle indicated by the following...Ch. 23 - Name the muscle indicated by the following...Ch. 23 - Name the muscle indicated by the following...Ch. 23 - Name the muscle indicated by the following...Ch. 23 - Name the muscle indicated by the following...Ch. 23 - Name the muscle indicated by the following...Ch. 23 - Name the muscle indicated by the following...Ch. 23 - Identify the muscles indicated in figure 23.12....Ch. 23 - Tendons of the rotator cuff muscles hold the head...
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