The arrow was a weapon in their culture, it was used to hunt and provide for their families as well as offer protection, and because of this it was a tool for sustaining life. One of the biggest factors in altering the meaning, is the way the arrow is depicted or placed in the tattoo design.
1 Symptoms of blood clots in the lung (pulmonary embolus) are chest pain, shortness of breath, and rapid pulse and breathing.  Symptoms of a stroke (blood clot in an artery of the brain) include loss of speech, vision, and weakness on one side of the body.
Signs and symptoms: 1  Blood clot-lung. 2  Blood clot in the legs. 3  Bone pain. 4  Brain tumor-metastatic. 5  Breathing difficulty. 6  Coughing up blood. 7  Headache.