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M2-C1-L09 --> Shoulder and Axilla

Terms

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Apex of Axilla x2
1st rib and clavicle
Base of Axilla
Concave skin of arm pit
Anterior wall of Axilla x2
Pectoralis major
&
Pectoralis minor
Posterior wall of Axilla. x4
Scapula

Subscapularis

Teres Major

Latissimus
Medial wall of Axilla x3
1st to 4th ribs

Intercostal membrane

Serratus anterior
Lateral wall of Axilla
Humerus (intertubercular groove)
What are the different components of the brachial plexus? x5
Roots
Trunks
Divisions
Cords
Terminal Branches
What are the nerve roots involved in the Brachial Plexus
C5, C6, C7, C8, and T1
What muscles are involved in the elevation of the scapula?
(Superior) Trapezius
Rhomboids
Levator Scapulae
What muscles are involved in the depression of the scapula?
(Inferior) Trapezius
Pectoralis Minor
Serratus Anterior
What muscles are involved in the protraction of the scapula?
Pectoralis Minor

Serratus Anterior
What muscles are involved in the retraction of the scapula?
(Middle) Trapezius
Rhomboids
Latissimus Dorsi
What muscles are involved in the downward rotation of the scapula?
Pectoralis Minor
Rhomboids
Latissimus Dorsi
Levator Scapulae
What muscles are involved in the upward rotation of the scapula?
Trapezius (superior and inferior)
Serratus Anterior
What are the rotator cuff muscles?
Supraspinatus
Infraspinatus
Teres Minor
Subscapularis
What muscles flex the glenohumeral joint?
Coracobrachialis
Anterior Deltoid
Pectoralis Major
(Biceps brachii)
What muscles are involved in the extension of the glenohumeral joint?
Posterior Deltoid
Latissimus Dorsi
Teres Major
(Triceps - Long head)
What muscles are involved in the abduction of the glenohumeral joint?
Supraspinatus
Deltoid
What muscles are involved in the adduction of the glenohumeral joint?
Pectoralis Major
Latissimus Dorsi
Teres Major
What muscles are involved in the lateral rotation of the glenohumeral joint?
Posterior deltoid
Infraspinatus
Teres Minor
What muscles are involved in the medial rotation of the glenohumeral joint?
Subscapularis
Pectoralis Major
Latissimus Dorsi
Anterior deltoid
Teres Major

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