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Wet Lab 5
Muscles of the Arm
Question | Answer |
---|---|
Proximal/Distal/Nerve/Action of E2 | E2 = Coracobrachialis Proximal (E2-P): Coracoid process Distal (E2-D): Medial, middle 1/3 of humerus Nerve: Musculocutaneus Action (E2-Act): Flex and adduct arm (resist shoulder dislocation) |
Proximal/Distal/Nerve/Action of E3 | E3 = Brachialis Proximal(E3-P): Anterior distal 1/2 of humerus Distal (E3-D): Ulna tuberosity & coronoid process Nerve: Musculocutaneous & Radial nerve ACt: FLex arm (all positions) |
Proximal/Distal/Nerve/Action of E4 | E4 = Triceps brachii Proximal (E4-P) Long: infraglenoid fossa Lateral: Posterior border of humerus (superior to radial groove) Medial: Posterior humerus (beneath lateral and radial groove) Distal (E4-D): Proximal olecranon Nerve: Radial ACtion: Ext |
Proximal/Distal/Nerve/Action of E1 | E1 = Biceps Brachii Proximal (E1-P): Long: supraglenoid fossa Short: coracoid process Distal (E1-D): Radius tuberosity Nerve: Musculocutaneous ACtion (E1-Act): Supinate forearm, flex in supine, short head resists shoulder dislocation |
Proximal/Distal/Nerve/Action of E5 | E5 = Anconeus Proximal (E5-P): Lateral epicondyle Distal (E5-D): Lateral olecranon (posterior surface of ulna) Nerve (E5-N): Radial Nerve Action (E5-Act): Assist triceps in extension, stabilize elbow joint. |