Hand Bones & Wrist Bones (Phalanges, Carpals, Metacarpals): Anatomy and Physiology
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This anatomy and physiology lesson covers the hand bones and wrist bones of the appendicular skeleton. The hand consists of long bones, while the wrist bones are classified as short bones.
The hand and wrist bones include the 14 phalanges (finger bones), 5 metacarpals (palm bones), and the 8 carpals (wrist bones).
The phalanges are named after directional terms: You have the distal, middle, and proximal phalanx of each finger. The fingers have three phalanges each, except for the thumb, which has only two phalanges (distal and proximal).
The metacarpals are distal to the carpals. They are numbered 1-5, with the thumb being metacarpal 1, and the little finger being metacarpal 5.
The bones of the phalanges have a base, shaft, and head portion.
The bones of the wrist (carpals) are as follows:
-Trapezium
-Scaphoid
-Lunate
-Triquetral
-Pisiform
-Hamate
-Capitate
-Trapezoid
To remember these bones, remember the mnemonic “To Save Lives, The Physician Helps Create Treatments.”
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