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27 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What muscles are included in the superficial group of the forearm extensors?
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The brachioradialis, anconeous, extensor carpi radialis longus and brevis, extensor digitorum, extensor digiti minimi, and extensor carpi ulnaris
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There's six.
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What muscles are included in the deep group of forearm extensors?
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Abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus, and extensor indicis
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There's four.
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What is the singular deep (forearm extensor) muscle?
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The supinator
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Of the extensor carpi radialis muscles, which is more radial? More ulnar?
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Longus is more radial and brevis is more ulnar
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Inflammation of what muscle causes 'tennis elbow'?
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The attachment of the carpi radialis brevis; in severe cases, can detach from the epicondyle
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What nerve innervates all extensor muscles of the forearm?
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The radial nerve
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What are the boundaries of the anatomic snuff box?
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Lateral - abductor pollicis longus and extensor pollicis brevis
Medial - extensor pollicis longus tendon Floor - navicular(scaphoid) |
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What is contained in the anatomic snuff box?
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Radial artery (comes down the anterior forearm to the snuff box)
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Where do you take a pulse from?
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What comes through the 'buttonhole' in the supinator?
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The deep branch of the radial nerve (aka posterior interosseous nerve) and the posterior interosseous artery and radial artery
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What is the extensor retinaculum?
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Connective tissue that binds tendons into their positions in the wrist (crosses the sheaths)
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What constitutes the boundaries of the antecubital fossa?
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Superior: the medial and lateral epicondyles
Medial: pronator teres Inferior(?): brachioradialis |
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What does the antecubital fossa contain?
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Superficial - median cubital vein
Also, bicipital aponeurosis, brachial artery and its divisions, and the median nerve |
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Of the two flexor digitorum muscles, which perforates the other at the middle phalanx of the digits (2-5)?
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Tendons from the flexor digitorum profundus perforate tendons from the flexor digitorum superficialis at the middle phalanx
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What nerve is responsible for people having a 'funny bone'?
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The ulnar nerve
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The ulna is the funny bone
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Where is the ulnar nerve located (in terms of the flexor region)?
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Behind the medial epicondyle and deep to the flexor carpi ulnaris
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Where is the median nerve located (in terms of the flexor region)?
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Deep to the flexor digitorum superficialis and flexor carpi ulnaris
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What are the two branches of the brachial artery?
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The ulnar and radial arteries
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What nerve can become compressed and lead to carpal tunnel syndrome?
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The median nerve
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What problem (basically) could be caused by damage to the median nerve proximal to the joints of the thenar eminence?
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The joints of the thumb either would stop functioning or have limited function, creating overall problems with hand functions.
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What hand muscle has both oblique and transverse fibers?
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The adductor pollicis
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What are the only hand muscles that can both flex and extend the digits?
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The lumbricals; for digits 2-5, they flex the MCP joints and extend the IP joints
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Pretty neat little muscles
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What artery provides the principle blood flow to the forearm?
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The ulnar artery
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Of the palmar and dorsal interossei muscles, which adduct? Which abduct?
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The palmar interossei muscles adduct, and the dorsal interossei muscles abduct (both apply to MCP joints of digits 2,4,5)
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DAB and PAD
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What arteries anastomose in the hand?
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The superficial palmar arch of the ulnar artery anastomoses with the deep palmar arch of the radial artery.
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What branch of the median nerve innervates the thenar eminence?
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The recurrent median nerve
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What two nerves innervate the palmar (mainly) surface of the hand?
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Median and ulnar nerves
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What nerve innervates all three short muscles of the little finger (digit 5)?
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The ulnar nerve
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