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27 Cards in this Set

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