NBCE PART 1 BOARDS- MUSCLES EXAM QUESTIONS WITH 100% GUARANTEED PASS

NBCE PART 1 BOARDS- MUSCLES EXAM QUESTIONS WITH 100% GUARANTEED PASS Which muscles are in the anterior compartment of the upper arm? - Answer-biceps, coracobrachialis, brachialis Triceps nerve origin insertion action - Answer-- radial n. - long head originates at infraglenoid tubercle, lateral head originates at post/lat humerus, above radial groove, medial head originates post/med aspect of humerus, below radial groove -insertion: olecranon of ulna -extends elbow Borders of Petits Triangle - Answer-medial: latissimus dorsi inferior: iliac crest lateral: external oblique common area of lumbar herniation What muscles are in the deep layer of the anterior forearm compartment? - Answer-1. flexor digitorum profundus 2. pronator quadrates 3. flexor pollicus longus What muscle is in the intermediate layer of the anterior forearm compartment? - Answer-flexor digitorum superficialis What muscles are in the superficial layer of the anterior forearm compartment? - Answer-1. pronator teres 2. flexor carpi radialis 3. palmaris longus 4. flexor carpi ulnari What muscles are supplied by the anterior interosseous nerve? - Answer-1. pronator quadratus 2. flexor pollicus longus What nerve supplies the flexor digitorum profundus? - Answer-Both the median AND ulnar Pronator teres nerve origin insertion action - Answer-- median n. - originates at medial epicondyle/humerus, coronoid process of ulna - inserts on radius (middle of lateral surface) - pronation of forearm Flexor carpi ulnaris nerve origin insertion action - Answer-- ulnar n. - humeral head originates at medial epicondyle/humerus. ulnar head originates at olecranon and posterior border of ulna - inserts on pisiform, hook of hamate, and base of 5th MCP - flex and adduct hand at wrist, flex forearm Palmaris longus nerve origin insertion action - Answer-- median n. - originates at medial epicondyle of humerus - inserts at palmar aponeurosis - flexes hand and forearm Flexor carpi radialis nerve origin insertion action - Answer-- median n. - originates at medial epicondyle of humerus - inserts at base of 2nd and 3rd MCP - flex and abduct hand, flex forearm Flexor digitorum superficialis nerve origin insertion action - Answer-- median n. - originates at medial epicondyle, coronoid process of ulna, and ulnar collateral ligament - inserts at palmar aspect of middle phalanx of digits 2-5 - flexes hand, PIPs, and forearm Flexor pollicus longus nerve origin insertion action - Answer-- anterior interosseous n. - originates at anterior surface of radius and interosseous membrane - inserts at the base of the distal phalanx of the thumb - flexes IP of thumb Flexor digitorum profundus nerve origin insertion action - Answer-- median and ulnar n. - originates at proximal anterior ulna and interosseous membrane - inserts at DIPS 2-5 - flexes DIPs and hands Pronator quadratus nerve origin insertion action - Answer-- anterior interosseous n. - originates at distal aspect of anterior ulna - inserts at distal aspect of anterior radius - pronation of forearm Which tendons go through the carpal tunnel? - Answer-flexor digitorum profundus, flexor digitorum superficialis, flexor pollicus longus Which forearm flexor muscles do NOT originate at the medial epicondyle of the humerus? (most of them do!) - Answer-flexor pollicus longus flexor digitorum profondus pronator quadratus Which forearm extensor muscles DO originate at the lateral epicondyle of the humerus? - Answer-supinator anconeus extensor carpi radialis brevis extensor carpi ulnaris extensor digiti minimi Supinator nerve origin insertion action - Answer-- radial n. - originates at lateral epicondyle of humerus, lcl of elbow, annular ligament, proximal posterior and lateral ulna -inserts at proximal 1/3rd of radius - supinates forearm anconeus nerve origin insertion action - Answer-- radial n. - originates at lateral epicondyle of humerus - inserts at olecranon of ulna - extends elbow and abducts ulna during pronation extensor carpi radialis long nerve origin insertion action - Answer-- originates at lateral supracondylar ridge of humerus