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31 Cards in this Set

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Anatomists divide the bones of the upper limbs, or extremities, into the following main groups:
• Hand
• Forearm
• Arm
• Shoulder girdle
The hand consists of how many bones?
27
the hand bones are subdivided into what groups?
Phalanges
Metacarpals
Carpals
Phalanges
bones of the digits
(fingers and thumb)
Metacarpals
bones of the palm
Carpals
bones of the wrist
First digit
Second digit
Third digit
Fourth digit
Fifth digit
(thumb)
(index finger)
(middle finger)
(ring finger)
(small finger)
the numbers start at the thumb or (same as thumb)
the lateral side of the hand
They are long bones consisting of a body and two articular ends, the head distally and the base proximally.
Metacarpals
contains two small sesamoid bones on its palmar aspect below the neck
The first metacarpal
, commonly known as the knuckles, are visible on the dorsal hand in flexion. The metacarpals are also numbered 1 to 5, beginning from the lateral side of the hand.
The metacarpal heads
___which are cylindric in shape and slightly concave anteriorly, form the ____
Five metacarpals
the palm of the hand
DIP

PIP

IP
Distal interphalangeal joint

Proximal interphalangeal joint

interphalangeal joint
has eight carpal bones, which are fitted closely together and arranged in two horizontal rows
wrist
are classified as short bones, composed of largely Cancellous tissue with an outer layer of compact bony tissue.
carpols
compact bone and spongy
cancellous bone
Beginning the proximal row of carpals on the lateral side, the ______, 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
The______ articulates with the radius proximally and is easy to recognize because of its crescent shape.
lunate
The _______ is roughly pyramidal and articulates anteriorly with the _____
triquetrum

hamate
The _____ is a pea-shaped bone situated anterior to the triquetrum and is easily palpated.
pisiform
Sally Left The Party To Take Cathy Home
Carpal Bones mnemonic
Beginning the distal row of carpals on the lateral side, the _______ has a tubercle and groove on the anterior surface.
trapezium
The _____ has a smaller surface anteriorly than posteriorly.
trapezoid
The ________ articulates with the base of the third metacarpal and is the largest and most centrally located carpal.
capitate
The wedge-shaped _______ exhibits the prominent hook of hamate, which is located on the anterior surface.
hamate
The_____ and the form the medial margin of the carpal groove.
hamate
is concave from side to side and forms ______
The anterior or palmar surface of the wrist

the carpal sulcus
results from compression of the median nerve inside the carpal tunnel.
Carpal tunnel syndrome
The anatomical snuffbox
is an important clinical region.
Snuffbox
scaphoid frax
When the hand is in ulnar deviation,_____ becomes palpable within the snuffbox. This position enables the physician to palpate the bone to assess for a fracture. The ____ of the radial artery can also be felt in the snuffbox.
the scaphoid

pulse