Which of the following correctly lists the bones of the upper limb in order from proximal to distal based on anatomical position?

• A. Carpals, humerus, radius, phalanges
• B. Humerus, carpals, radius, phalanges
• C. Humerus, radius, carpals, phalanges
• D. Radius, humerus, carpals, phalanges

Answer: (C)

Verified step by step guidance

1. Step 1: Understand the anatomical position of the upper limb. The anatomical position refers to the body standing upright, 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.
2. Step 2: Identify the major 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).
3. Step 3: Arrange the bones in order from proximal to distal. The humerus is the most proximal bone, followed by the radius (one of the forearm bones), then the carpals (wrist bones), and finally the phalanges (finger bones).
4. Step 4: Compare the given options to the correct anatomical order. The correct sequence is: Humerus → Radius → Carpals → Phalanges.
5. Step 5: Confirm that the correct answer matches the anatomical order. The correct answer provided is 'Humerus, radius, carpals, phalanges,' which aligns with the proximal-to-distal arrangement of the upper limb bones.