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Multiple Choice
Which of the following correctly lists the bones of the upper limb in order from proximal to distal based on anatomical position?
A
Humerus, radius, carpals, phalanges
B
Radius, humerus, carpals, phalanges
C
Carpals, humerus, radius, phalanges
D
Humerus, carpals, radius, phalanges
Verified step by step guidance
1
Step 1: Understand the anatomical position. In anatomical position, the body is upright, facing forward, with arms at the sides and palms facing forward. This orientation is essential for determining proximal (closer to the trunk) and distal (farther from the trunk) relationships.
Step 2: Identify the bones of the upper limb. The upper limb consists of the humerus (upper arm bone), radius and ulna (forearm bones), carpals (wrist bones), metacarpals (hand bones), and phalanges (finger bones).
Step 3: Determine the proximal-to-distal order. Proximal bones are closer to the trunk, while distal bones are farther away. The humerus is the most proximal bone, followed by the radius and ulna, then the carpals, and finally the phalanges.
Step 4: Compare the given options. Evaluate each option to see which correctly lists the bones in order from proximal to distal based on anatomical position.
Step 5: Select the correct answer. The correct sequence is humerus (proximal), radius (forearm), carpals (wrist), and phalanges (distal).