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37 Cards in this Set
- Front
- Back
The pectoralis major and latissimus dorsi are known as___muscles because they originate on the axial skeleton.
a. Triangular b. Suprascapular c. Thoracodorsal d. axial |
D. Axial
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What muscle is located on the inferior part of the back and commonly known as the "swimmer's muscle"?
a. Subscapularis b. Latissimus Dorsi c. Rotator Cuff d. Teres Major |
B. latissimus dorsi
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What is the most commonly injured muscle of the rotator cuff due to its location between the head of the humerus and the acromion process of the scapula?
a. Supraspinatus b. Infraspinatus c. Teres Minor d. Subscapularis |
A. Supraspinatus
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What injury can occur due to repetitive movement of an arm over the head?
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Impingement syndrome
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This muscle originates on the clavicle and the sternum and inserts on the intertubercular sulcus of the humerus-
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Pectoralis major
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The Pectoralis Major performs which of these actions?
a. adducts b. medially rotates c. flexes and extends arm d. all of the above |
D. all of the above
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The latissimus dorsi performs which of these actions?
a. extends and medially rotates arm b. adducts arm c. flexes arm d. a and b |
D. a and b
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What muscle originates at the lumbar vertabrae crests of the sacrum and the ilium and lumbar facia?
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Latissimus dorsi
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Where does the latissimus dorsi insert?
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Intertubercular sulcus
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Name the axial muscle(s) that medially rotates the arm-
a. Pectoralis major and Latissimus dorsi b. deltoid c. Teres major and Teres minor d. all of the above |
A. Pectoralis Major and latissimus dorsi
(The rest are scapular muscles) |
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What is the nerve innervation for the deltoid muscle?
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Axillary nerve
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What muscle originates on the acromial end of the clavicle and inserts on the deltoid tuberosity?
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Deltoid
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What are the actions of the deltoid muscle?
a. Extend and laterally rotate the arm b. abduct c. flex and medially rotate d. all of the above |
D. All of the above
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The subscapularis originates at the___, and inserts at the ___?
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Subcapular fossa of scapula, lesser tubercle of humerus
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What is the action of the subscapularis?
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Medially rotates arm
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Wher does the supraspinatus originate and insert?
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Supraspinous fossa of scapula, greater tubercle of humerus
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What is the action of the suprapinatus muscle?
a. Adduct arm b. Assist Subscapularis in rotating the arm c. flexes arm d. Assists deltoid in abducting the arm |
D. assists deltoid in abducting the arm
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Where does the Infraspinatus originate and insert?
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Infraspinous fossa, greater tubercle
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What is the action of the Infraspinatus?
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Laterally rotates and adducts arm
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Name the SITS muscles that insert on the Greater tubercle of the humerus-
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Suprapinatus, Infraspinatus, and Teres Minor
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Name all of the muscles that laterally rotate the humerus-
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Deltoid, Infraspinatus, and Teres minor
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Where does the teres major originate and insert?
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Inferior angle of the scapula, and medial lip of intertubercular sulcus
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What is the action of the teres major?
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Extends arm at the shoulder joint and assists in adduction and medial rotation of arm
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What muscle originates at the inferior lateral border of the scapula and inserts on the greater tubercle of the humerus?
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Teres minor
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What is the action of the teres minor?
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Laterally rotates, extends, and adducts arm
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Name the muscle that originates on the coricoid process-
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Coracobrachialis
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Where does the coracobrachialis originate and insert?
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Coracoid process of the scapula, and middle of medial shaft surface of humerus
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What is the action of the coracobrachialis?
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Flexes and adducts arm at shoulder joint
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What muscle makes up the anterior border of the axilla?
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Pectoralis major
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What muscle makes up the posterior axillary border?
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Latissimus dorsi
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Name the muscles that make up the rotator cuff
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Supraspinatus-infraspinatis-teres minor-subscapularis
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Which muscles can medially rotate the arm?
(there are 5) |
Pectoralis major-deltoid (anterior)-latissimus dorsi-subscapularis-Teres major
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Which muscles flex the arm?
(there are 3) |
P. major-deltoid (Anterior)-coracobrachialis
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Name the 2 muscles that abduct the arm
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lateral deltoid and supraspinatus
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What 3 muscles laterally rotate the arm?
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posterior deltoid, teres minor, and infraspinatus
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What 5 muscles extend the arm?
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Latissimus dorsi, posterior deltoid, teres minor, teres major, pectoralis major
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There are 6 muscles that adduct the humerus, name them.
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Pectoralis major, latissimus dorsi, infraspinatus, teres major, teres minor, coracobrachialis
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