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UE Study Questions
Assortment of study questions on the upper extremity (NOT muscle info)
| Question | Answer |
|---|---|
| Describe the Canal of Guyon. | osseofibrous tunnel between the hook of the hamate and pisiform(pisohamate ligament); contains: deep ulnar nerve and ulnar artery |
| What structures are included in the Extensor Expansion? | Extensor digiti minimi, extensor indicis, extensor pollicus brevis. |
| What structures compose the anatomical snuff box? | abductor pollicus longus, extensor pollicus brevis, extensor pollicus longus. Floor: Scaphoid Bone, running through: radial artery. |
| What describes the 1st Carpo-metacarpal joint? | highly mobile saddle joint |
| Describe the Flexor Retinaculum. | attaches from the hook of hamate and pisiform to the trapezium and scaphoid. The carpals which are not attached to the retinaculum form the carpal arch. |
| Which muscles are included in the Thenar Imminence? | Abductor Pollicus Brevis, Flexor Pollicus Brevis, Opponens Pollicus. |
| Which muscles are included in the hypothenar immenence? | abductor digiti minimi, flexor digiti minimi brevis, opponens digiti minimi |
| Which nerve runs between the FDS and the FDP? | Median Nerve |
| Where does the Anterior Interosseus terminate? | Pronator Quadratus |
| The 4 palmar digital nerves from Median Nerve innervate _____________. | palmar skin and dorsal tips of lateral 3-5 digits. |
| Where does the Ulnar Nerve divide into the superficial and deep branches? | proximal to the canal of guyon |
| Where does Deep Radial Nerve become Posterior Interosseus Nerve? | When it emerges between the 2 heads of Supinator? |
| What are the contents of the Carpal Tunnel? | Median Nerve, Tendons of FDS and FDP (in common flexor synovial sheath); Tendon of FPL in own sheath. |
| What are the signs and symptoms of Median Nerve entrapment in the Carpal Tunnel? | tingling, loss of sensation; thenar muscles weak with atrophy, lateral 2 lumbricals don't have full extension present |
| What are signs and symptoms of Anterior Interosseus nerve syndrome? | weakness of FPL, lateral 1/2 FDP and Pronator Quadratus; swelling and edema in forearm (NOT carpal tunnel) |
| Describe the Volar Plates | thick fibrocartilagenous plates from the palmar metacarpal head to palmar base of prox. phalynx. limits hyperextension. |
| Which 5 joints comprise the elbow complex? | humeroulnar joint, humeroradial joint, proximal radioulnar joint, middle radioulnar joint, distal radioulnar joint |
| what are the main roles of the middle radioulnar joint? | (1.) to stabilize the proximal and distal radioulnar joints during pronation and supination. (2.) assist in transmitting and distributin compressive forces from wrist through forearm |
| What is the TFCC? | Triangular Fibro Cartilage Complex. (articulates with the lunate and triquestrum to bind the distal radius and ulna together. |
| Which muscles originate from the lateral epicondyle? | extensor carpi radialis brevis, extensor digitorum, extensor digiti minimi, extensor carpi ulnaris, supinator |
| At the elbow, the radial nerve runs anterior to the lateral epicondyle where it divides into two branches. What are these branches and what do they innervate? | Deep Radial: motor; extensor carpi radialis brevis, supinator; Superfical Radial: sensory; dorsal thumb and lateral 2.5 fingers, as well as small strip of skin on palmar surface of thumb. |
| Which muscle separates the flexors from the extensors? | Brachioradialis |
| Where does the Median Nerve run in relation to the Brachial Artery? | Medial to it. |
| What is the Sublimis Bridge? | a fibrotendinous arcade representing the origin of flexor digitorum superficialis. The Median Nerve runs deep to it. |
| Describe the path of the Median Nerve as it exits the cubital fossa. | It exits by passing between the two heads of pronator teres where it gives off the anterior interosseus branch of median nerve. |
| Where does the Median Nerve give off the Palmar Cutaneous branch? | Just proximal to the flexor retinaculum. The palmar cutaneous branch runs superficial to the flexor retinaculum. |
| What muscles originate at the coronoid process? | Flexor Digitorum Superficialis and Pronator Teres. |
| A possible labral tear could result from a pull on which tendon? | Biceps Brachii |
| Musculocutaneous Nerve terminates as ____________. | Lateral antebrachial cutaneous nerve. |
| What forms the Quadrangular Space? What runs through it? | Medial Humerus (lat), long head of Triceps (med), Teres Major (Inf.) and Teres Minor (Sup). Running through: Axillary Nerve and Posterior Humeral Circumflex Artery. |
| Talk to me about the "Radial Groove" | divides the lateral and medial heads of the Triceps; houses radial nerve and profunda brachii artery |
| The inferior redundant fold of the fibrous capsule and synovium in the shoulder serves what purpose? | prevents tearing of the capsule with abduction |
| An unstable humeral head is driven superiorly into the coracoacromial arch. What could be damaged? | impingement of the supraspinatus tendon and the long head of the biceps, as well as the subacromial bursa. |
| What provides the only attachment of the upper limb to the axial skeleton? | the sternoclavicular joint |
| Hypertrophy of the scalene muscles can be really bad. Why? | the roots of the brachial plexus emerge between the anterior and middle scalenes, so hypertrophy can cause them to be compressed. |
| What vein is a common site for intravenous injections and drawing blood? | Medial Cubital Vein. |
| What important structure runs through the clavipectoral triangle? | Cephalic Vein |
| What are the Cord contributions of the Levator Scapulae? | C3-5 |
| What runs between the upper and lower subscapular nerves? | Thoracodorsal nerve. |
Created by:
jpowley
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