Procedures Ch 4
Help!
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| How many bones are in the hand? | 27
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| The digits contain how many phalanges? | 14
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| Where do you center for an AP hand projection? | perpendicular to the 3rd metacarpal joint
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| The hand contains how many metacarpals? | 5
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| How many phalanges does the 1st digit contain? | 2
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| How many phalanges do the other 4 digits contain? | 3
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| Name the phalanges of the other 4 digits. | proximal, middle, distal
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| Name the 3 parts of each phalanx | head, body, base
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| Name the 4 parts of each metacarpal | head, neck, body, base
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| Name the area below the head of the metacarpal where fractures often occur | neck
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| Name the distal end of the metacarpal | head
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| Name the proximal end of the metacarpal | base
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| Name of the 2 small bones located on the palmar aspect of the first metacarpal below the neck | sesamoid bones
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| The metacarpal heads are commonly known as: | knuckles
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| How many carpal bones are in the wrist? | 8
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| Name the 4 bones of the proximal row of carpals, nearest the forearm | scaphoid, lunate, triquetrum, pisiform
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| Name the 4 bones of the distal row of carpals | trapezium, trapezoid, capitate, hamate
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| The carpals are classified as: | short bones
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| The metacarpals are classified as: | long bones
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| the largest bone in the proximal carpal row - has a tubercle on the anterior and lateral aspect for muscle attachment and is palpable near the base of the thumb | scaphoid
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| articulates with the radius proximally and is easy to recognize because of its crescent shape | lunate
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| roughly pyramidal and articulates anteriorly with the hamate | triquetrum
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| a pea-shaped bone situated anterior to the triquetrum and is easily palpated | pisiform
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| begins the distal row of carpals on the lateral side | trapezium
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| located next to trapezium and has a smaller surface anteriorly than posteriorly | trapezoid
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| articulates with the base of the third metacarpal and is the largest and most centrally located carpal | capitate
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| medial carpal in the distal row | hamate
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| a triangular depression located on the posterior surface of the wrist and is visible when the thumb is abducted and extended | anatomic snuffbox
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| a clinical sign suggesting fracture of the scaphoid | tenderness in the snuffbox area
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| the most commonly fractured carpal bone | scaphoid
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| The anterior or palmar surface of the wrist is concave from side to side and forms the ______ _______. | carpal sulcus
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| a strong fibrous band that attaches medially to the pisiform and hook of hamate and laterally to the tubercles of the scaphoid and trapezium | flexor retinaculum
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| the passageway created between the carpal sulcus and flexor retinaculum | carpal tunnel
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| The _____ _____ and the _____ _____ pass through the carpal tunnel. | median nerve and flexor tendons
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| results from compression of the median nerve inside the carpal tunnel | carpal tunnel syndrome
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| Name the 2 bones that are contained in the forearm that lie parallel to each other | radius and ulna
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| located on the lateral side of the forearm | radius
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| located on the medial side of the forearm | ulna
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