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Related Flashcards
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Cards In This Set
| Front | Back |
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Pectoral girdle
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Clavicle and scapula
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Pectoral region main action.
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Move humerus or shoulder
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Pec major synergist with what muscles
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Latissimus dorsi and teres major
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Pectoralis major action
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Flexes and extends humerus, medially rotates and adducts
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Pectoralis minor
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Draws clavicle downward
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Quadrangular space
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Area between humerus and neck (armpit)
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Bony borders of the quadrangular space
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Surgicl neck of humerus
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Muscular borders of quadrangular space (4)
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Terres minor and subscapularis, long head of tricep, teres major
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Structures that pass through the quadrangular space
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Axillary nerve, posterior humeral circumflex artery
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Axilla
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Triangular area where arm and thorax unite
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Brachial plexus
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Braid of nerves that supply the arm
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Roots of brachial plexus
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Ventral rami of C5-T1 "cervical enlargement"
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Trunks of brachial plexus
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Upper middle lower
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Divisions of brachial plexus (2)
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1)ANTERIOR: supplies flexors in anterior arm
2)POSTERIOR: supplies extensors in posterior arm
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Cords in brachial plexus
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Named based on relationship with axillary artery
medial, lateral, posterior
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