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