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3. Additional Directional Terms

Other terms used in anatomical terminology describe direction. Lateral refers to something that is toward the side of the body. The thumb is lateral to the fingers (because in anatomical position, the palm faces forward). Medial describes something toward the middle of the body: the nose is medial to the ears. Proximal and distal refer to how close something is to the trunk of the body — the elbow is proximal to the hand, and the foot is distal to the hip. Finally, specific terms describe depth. Superficial refers to something close to the surface (like a hair follicle), while something "deep" is farther from the surface (like bone marrow).

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