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27 Cards in this Set
- Front
- Back
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how many bones make up the wrist and hand?
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29 including the radius and ulna
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how many carpal bones are there?
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8. ( they are in 2 rows of 4)
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what bones make up the proximal row?
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scaphoid/navicular, lunate, triquetrum, and pisiform
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what bones make up the distal row?
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trapezium, trapezoid, capitate, and hamate
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what ligaments create the carpal tunnel?
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transverse carpal & volar carpal ligaments
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what bone is the most commonly fractured?
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scaphoid
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does the thumb have a sesamoid bone whithin its flexor tendon?
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yes
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what is the primary origin for most of wrist flexors?
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medial epicondyle & coronoid process
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what is origin for most wrist extensors?
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lateral epicondyl
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what type of joint is the wrist?
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condyloid (flexion, extension, ab/adduction)
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closing of fingers to be tight is adduction of ______ joint & thumb
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metacarpophlangeal
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anterior muscles. where do they originate?
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flexor carpi radialis, palmaris longus,flexor carpi ulnaris. medial epicondyle of humerus
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what nerves innervate the anterior region..
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median and ulnar
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posterior muscles. & what do they originate
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extensor carpi ulnaris, extensor carpir radialis longus & brevis, all originate on later epicondyle. lateral epidcondyle
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what nerve innervates the posterior muscles
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radial nerve (C6-C80
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what are the extensors of wrist and phalanges innervated by?
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radial nerve
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what is the posterior abductor? & innervated by?
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abductor pollicis longus . radial nerve innervates
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all flexor tendons except for ___ & ___ pass under carpal tunnel with median nerve
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flexor carpi ulnaris & palmaris longus
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what is the function of flexor & extensor retinaculum?
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to prevent bowstring effect
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what are the abductors?
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flexor carpi radialis, extensor carpir radialis longus & brevis, abductor pollicis longus, extensor pollicis longus & brevis
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what are the adductors?
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flexor carpi ulnaris, extensor carpi ulnaris,
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muscles of wrist and hand are all innervated from the ___, ___, & ___ nerves of the brachial plexus
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radial, median, and ulnar
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radial nerve branches to become
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posterior interosseous nerve
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median nerve branches to become
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anterior interosseous nerve
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what is the name of the muscular fat pad that forms the ulnar border on the palmar surface of the hand?
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thenar eminence
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side of hand where pinky finger is located
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hypothenar
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middle of hand wher you find the lumbricals
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intermediate
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