2. Three Radial Artery Sections

The radial artery has an interesting path that demonstrates how important it is to blood flow in the forearm. It begins at the inner elbow and travels to the wrist. Then, it winds around the back of the hand and beneath the tendons that move the thumb. From there, it heads between the thumb and pointer finger metacarpal bones in the hand before making its way deep into the palm.

Wrist Hand Blood Supply Juanmonino / Getty Images

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