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Multiple Choice
Which of the following correctly lists the bones of the upper limb from proximal to distal?
A
Radius, humerus, carpals, phalanges
B
Humerus, carpals, radius, phalanges
C
Humerus, radius, carpals, phalanges
D
Carpals, humerus, radius, phalanges
Verified step by step guidance
1
Step 1: Understand the anatomical organization of the upper limb. The upper limb consists of bones arranged from proximal (closer to the trunk) to distal (farther from the trunk). These include the humerus, radius, ulna, carpals, metacarpals, and phalanges.
Step 2: Identify the proximal-most bone. The humerus is the single long bone of the upper arm and is the most proximal bone in the upper limb.
Step 3: Determine the next bone moving distally. The radius (along with the ulna) forms the forearm and is located distal to the humerus.
Step 4: Recognize the bones of the wrist. The carpals are a group of small bones that form the wrist and are located distal to the radius.
Step 5: Identify the distal-most bones. The phalanges are the bones of the fingers and are the most distal bones in the upper limb.