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WEEK 23:
Anterior arm, forearm, wrist and hand:
| Question | Answer |
|---|---|
| shoulder movement (6)- fine eat my last apple a**hole | Flexion and extension, Medial and lateral rotation, and Abduction and adduction |
| elbow movement (4) - FEPS | Flexion and extension and Pronation and supination (radio-ulnar joints) |
| wrist movement (4) - FEAA | Flexion and extension, and Abduction and Adduction |
| muscles of the anterior arm (3- BCB) | biceps brachii, coracobrachialis, and brachialis |
| nerve in anterior arm muscles | musculocutaneous nerve |
| blood vessels in anterior arm muscles | brachial artery and vein |
| branches of brachial artery (5- please miss have some ice) | profunda brachii which terminates by bifurcating into radial and ulnar arteries, common interosseous artery off ulna artery, and ulnar and radial arteries anastomose into palmar arches |
| cubital fossa borders (5) | medial border (pronator teres), lateral border (brachioradialis muscle), floor (proximal - brachialis and distal - supinator), roof (skin and fascia) |
| cubital fossa contents (from medial to lateral) | median nerve, brachial artery, biceps tendon, and radial nerve |
| AIN | anterior interosseous nerve (specific branch of median nerve) |
| roof boundaries of carpal tunnel (1) | flexor retinaculum |
| lateral boundaries of carpal tunnel (2) | scaphoid and trapezium tubercles |
| medial boundaries of carpal tunnel (2) | hook of hamate and pisiform |
| carpal tunnel boundaries (3) | lateral (scaphoid and trapezium tubercles), medial (hook of hamate and pisiform), roof (flexor retinaculum) |
| contents of carpal tunnel (10 - 1 nerve 9 tendons) | medial nerve, flexor digitorum superficialis (4 tendons), flexor digitorum profundus (4 tendons), and flexor pollicis longus (1 tendon) |
| fascia of the hand includes (6) | thenar muscles, hypothenar muscles, flexor tendons + sheaths and lumbricals, adductor pollicis, interossei, and spaces (midpalmar and thenar) |
| movements of the fingers (4) | digital flexion and extension, abduction, and adduction |
| movements of the thumb (6) | abduction, adduction, extension, flexion, opposition (italian sign), and reposition (back to normal - queen wave) |
| distribution and test for integrity of nerves in hand (see if nerve working properly) | motion and sensory function testing involving patient to make an 'ok' sign (median nerve), extend wrist and fingers into a stop sign (radial nerve), and spread/ abductfingers apart (ulnar nerve) |
| what does the profunda brachii branch of the brachial artery bifurcate into (2) | radial and ulnar arteries |
| common interosseous artery comes from which branch of the brachial artery | ulnar artery |
| ulna and radial arteries anastomose (link together) into | palmar arches |
| medial border of cubital fossa | pronator teres |
| lateral boarder of cubital fossa | brachioradialis muscle |
| floor borders of the cubital fossa | proximal (brachialis muscle) and distal (supinator muscle) |
| proximal floor border of the cubital fossa | brachialis muscle |
| distal floor border of the cubital fossa | supinator muscle |
| roof border of the cubital fossa | skin and fascia |
| biceps brachii heads | short and long |
| action of the biceps brachii | supination of forearm, flexion of supinated arm, flexion of shoulder joint, and short head resists dislocation of shoulder |
| innervation of the biceps brachii | musculocutaneous nerve (C5, C6) |
| specific action of the short head of the biceps brachii | resists dislocation of shoulder |
| action of brachialis | flexion of elbow joint in all positions |
| innervation of brachialis | musculocutaneous nerve (C5, C6) |
| action of brachioradialis | flexion of elbow, maximal when forearm is midpronated |
| innervation of brachioradialis | radial nerve (C5, C6, C7) |
| action of coracobrachialis | helps with flexion and adduction of shoulder and resists dislocation of shoulder |
| innervation of coracobrachialis | musculocutaneous nerve (C5, C6, C7) |
| anterior forearm - superficial muscles (4- pass fail pass fail- the 4 fingers on the forearm) | pronator teres, flexor carpi radialis, palmaris longus, and flexor carpi ulnaris |
| anterior forearm - intermediate muscles (1) | flexor digitorum superficialis (supplied by median nerve- C7, C8, T1) |
| flexor digitorum superficialis | intermediate muscle in anterior forearm supplied by C7, C8, T1 |
| flexor digitorum superficialis is supplied by | median nerve (C7, C8, T1) |
| anterior forearm - deep muscles (3) | flexor digitorum profundus, flexor policis longus, pronator quadratus |
| flexor digitorum innervation | lateral (median nerve- C8,T1 and medial nerve - C8, T1) |
| lateral innervation of the flexor digitorum profundus | median nerve (C8, T1) |
| medial innervation of the flexor digitorum profundus | ulnar nerve (C8, T1) |
| flexor policis longus innervation | AIN (C8, T1) |
| pronator quadratus innervation | AIN (C8, T1) |
| action of pronator teres | pronates and flexes the forearm |
| action of flexor carpi radialis | flexes and abducts the wrist |
| action of palmaris longus | flexes the wrist |
| action of flexor carpi ulnaris | flexes and adducts the wrist |
| action of flexor digitorum superficialis | flexes PIP of digits 2-5 (proximal interphalangeal joints) |
| action of flexor digitorum profundus | flexes DIP of digits 2-5 (distal interphalangeal joints) |
| action of flexor policis longus | flexes IP of thumb (interphalangeal joint) |
| action of pronator quadratus | pronates the forearm |
| contents of the anterior and superficial part of the hand (4- please teach hand information) | palmar aponeurosis, thenar muscles, hypothenar muscles, and intrinsic muscles |
| types of thenar muscles (3 - OAF) | opponens pollicis, abductor pollicis brevis, and flexor pollicis brevis |
| innervation of the thenar muscles | median nerve |
| types of hypothenar muscles (3- OAF) | opponens digiti minimi, abductor digiti minimi, and flexor digiti minimi brevis |
| innervation of hypothenar muscles | ulnar nerve |
| function of lumbricals | flex the MCP (metacarpal - phalangeal) joints and extend the IP (interphalangeal) joints |
| innervation of the lateral (radial) side of the lumbricals (index and middle finger) | median nerve |
| innervation of the medial (ulnar) side of the lumbricals (ring and pinky finger) | ulnar nerve |
| how many lumbricals do we have | 4 |
| function of dorsal interossei (DAB) | finger abduction |
| function of palmar interossei (PAD) | finger adduction |
| innervation of dorsal interossei | ulnar nerve |
| innervation of palmar interossei | ulnar nerve |
| tendons in the carpal tunnel (3) | flexor digitorum superficialis (4 tendons), flexor digitorum profundus), and flexor pollicis longus (1 tendon) |
| nerve in carpal tunnel | medial nerve |
| palmar aponeurosis** (additional) | thick triangular fascia in middle of palm to protect underlying structures and anchors skin |
Created by:
kablooey
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