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Brachium

Gross II - Zumpano fall 2010

QuestionAnswer
Spinal level of upper lateral brachial cutaneous n C5 (from axillary n)
Spinal level of intercostobrachial n T2
Spinal level of medial brachial cutaneous n C8, T1
Spinal level lower lateral brachial cut n. C5, C6 (from radial n)
Spinal level Medial antebrachial cutaneous n C8, T1
Spinal level of posterior antebrachial cutaneous n. C6,7,8 (from radial)
Spinal level of lateral antebrachial cutaneous C5,6
Spinal level of supraclavicular n C3,4
Spinal level of posterior brachial cutaneous n C8, T1 (from radial)
Origin of long head of biceps Supraglenoid tubercle of scap
Origin of short head of biceps Coracoid process of scapula
Insertion of biceps Radial tuberosity
Innervation of biceps Musculocutaneous n.
Spinal levels of biceps C6
Actions of biceps Flexes forearm, supination at 90
Origin of coracobrachialis Coracoid process of scap
Innervation of coracobrachialis Musculocutaneous n.
Insertion of coracobrachialis Medial surface of middle humerus
Spinal level of coracobrachialis C6
Action of coracobrachialis Flexes & adducts humerus at glenohumeral joint
Origin of brachialis Distal half of anterior humerus
Insertion of brachialis Ulnar tuberosity and anterior surface of coronoid process
Innervation of brachialis Musculocuteous n.
Spinal level of brachialis C6
Action of brachialis Flexes forearm at elbow in any position
Peripheral entrapment sites for musculocutaneous n. Coracobrachialis and brachialis
Symptoms of entrapment of musculocutaneous n Forearm flexion and supination weakness. Paresthesia on C6 dermatome
Peripheral entrapment sites for lateral antebrachial cutaneous n. Biceps and brachialis
Symptom of Peripheral entrapment of lateral antebrachial cutaneous n. Paresthesia
Axillary artery --> ________ --> _________ & ________ Brachial, radial, ulnar
What branches off brachial artery? Province brachii, superior & inferior ulnar collateral
What anastomoses with radial collateral a.? Radial recurrent a.
What anastomoses with superior ulnar collateral a. Posterior ulnar recurrent a.
What anastomoses with inferior ulnar collateral a.? Anterior ulnar collateral a.
Ulnar a. --> ________ --> _________&_________ Common interosseous a., post & ant interosseous a
Post & ant ulnar recurrent a. Come off of? Ulnar a
Origin of long head of triceps Infraglenoid tubercle of scap
Origin of lateral head of triceps posterolateral surface of humerus and lateral intermuscular septum
Origin of medial head of triceps Postermedial surface of humerus and medial intermuscular septum
Insertion of triceps Olecranon process of ulna
Innervation of triceps Radial n.
Spinal levels of triceps C7, C8
Actions of triceps Extends forearm at elbow; long head stabilizes glenohumeral joint & extends the humerus at glenohumeral joint
Basilic vein travels with what nerve? Medial antebrachial cutaneous n.
Cephalic vein travels with what nerve? Lateral antebrachial cutaneous
What are the boundaries of the CUBITAL FOSSA? (floor, roof, lateral & medial borders) Floor = brachialis tendon; Roof = Bicepital aponeurosis; Lateral border = Brachioradialis; Medial border = Pronator Teres
Created by: mrw2013