Lab 3_ Shoulder_Part_2

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Anatomy

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Apr 3, 2024

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PRE-LAB: Part One: Know the following muscles, including their action, origin and insertion on the skeleton. Use the following diagrams 1 Kine 2000U Anatomy of Human Movement Lab 3: Shoulder Two and Elbow  Anterior view  Posterior view  Pectoralis major (sternal fibers)  supraspinatus  infraspinatus  teres minor  subscapularis  brachialis  coracobrachialis  biceps brachii (cut ends)  teres major  latissimus dorsi  thoracolumbar fascia  supraspinatus  pectoralis major (cut edge)  serratus anterior  pectoralis minor  pectoralis major (clavicular fibres)  List the muscles which make up the rotator cuff:  Subscapularis, teres minor, supraspinatus, infraspinatus.   In lab, describe the origin, insertion and action of the rotator cuff muscles to your lab partner using the arm model. Figure 1: Anterior view

Use figures 1, 2 and 3 and write the name of the correct muscle next to the letter identifying it: A. Supraspinatus B. Subscapularis C. Pectoralis Major D. Teres Major E. Coracobrachialis F. Latissimus Dorsi G. Brachialis H. Pectoralis Minor I. Serratus Anterior J. Supraspinatus 2 Posterior view Figure 2: Figure 3: Anterior shoulder muscles

K. Infraspinatus L. Teres Minor M. Teres Major N. Thoracikumbar fascia O. Latissimus Dorsi P. Teres Major Q. Pectoralis Major R. Pectoralis Major Fill in the blanks of the chart below for the glenohumeral muscles: Movements Muscles Flexion Pectoralis Major, Anterior Deltoid, Biceps brachii, coracobrachialis Extension Latissimus dorsi, Teres major, Pectoralis major (sternocostal fibres: extend flexed humerus), Posterior deltoid Medial Rotation Subscapularis, teres major, latissimus dorsi, pectoralis major, anterior deltoid Lateral rotation Teres minor, Infraspinatus, posterior deltoid Abduction Supraspinatus, Deltoid, pectoralis major Adduction Coracobrachialis, pectoralis major, latissimus dorsi, teres major 3

Anterior elbow muscles superficial and deep: Indicate the name of the muscle identified by the each letter in the chart below: A. Biceps brachii B. Brachialis C. Protractor teres D. supinator E. brachioradialis 4

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