Blood platelets are aptly-named, small blood cell fragments shaped like plates. They are basically our bloodstream’s roving, first responders to emergencies. Their primary function is clotting to seal off any bleeding ruptures via “Virchow's triad,” hemostatic, coagulation cascade. They do so by shapeshifting into "sticky rice" balls clumping together within fibrin fishnets at wound sites. Additionally however, they also serve in our immune system by patrolling pathogenic invaders to help fight infections.