The micro bones you might be referring to are likely the small bones found in the human anatomy that correspond to the areas you've mentioned. Here’s a breakdown of those areas:
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Toes: The small bones in the toes are called phalanges. Each toe has three phalanges (proximal, middle, and distal) except for the big toe, which has two (proximal and distal).
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Funny Bone: The term "funny bone" actually refers to the ulnar nerve, which runs along the inside of the elbow, rather than a bone itself. However, the bone associated with it is the humerus, which is the long bone of the upper arm.
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Knees: The knee joint is comprised of various bones, including the femur (thigh bone), tibia and fibula (shin bones), and the patella (kneecap). The most relevant micro structure would be the menisci, which are cartilage structures in the knee joint.
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Fingers: Like the toes, the fingers also contain phalanges. Each finger has three phalanges (proximal, middle, and distal) except for the thumb, which has two (proximal and distal).
These small bones and structures play important roles in movement and stability in their respective joints. If you were thinking of something else regarding "micro bones," please provide further clarification!