figure 16-19 Platelets change shape when exposed to ADP, which is liberated from platelet dense granules. Platelets are smooth flat disks shown in the electron micrograph at the left. Treatment with ADP causes long processes to protrude from the platelets, which swell to become irregular "spiny spheres." The processes then adhere to a surface or to other platelets, shown on the right. Reproduced from Zucker, M. B. (1980). Sci. Am. 242, 86-103.
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Everything you wanted to know about. How To Cure Tennis Elbow. Are you an athlete who suffers from tennis elbow? Contrary to popular opinion, most people who suffer from tennis elbow do not even play tennis. They get this condition, which is a torn tendon in the elbow, from the strain of using the same motions with the arm, repeatedly. If you have tennis elbow, you understand how the pain can disrupt your day.