What causes a pounding heart beat?

What to do if you and are allergic to tetanus shot? Which muscle contracts to pull air into the lungs? Movement of air to and from the alveoli is called what? What are the 3 anatomical subdivisions of the ear? What are some of the mental illness that can be cured? How many people are allergic to soap? What Different shapes of a root canal? Can heart transplant recipients vomit? Ask us many stages are involved in human food digestion? What actors and actresses appeared in The Seven Year Itch - 1955? You have swelling under both eyes that feels like sunburn and has caused your cheekbones to swell? What is the appearance of a pharynx? Symtoms of brain cancer? My sister has had 5 teeth die in the last year. They have all gone undetected by regular exams and xrays. She has not suffered trauma to her mouth. What could be causing this to happen? What causes death in mantle cell lymphoma? Can pearl barley give you food poisoning? Do sociopaths act out different characters? Can you get lice if you were with a person or even with the family who had lice even if it was only a few hours? What Emotional barriers in problem solving? How long does it take for a bruised knee cap to heal in children?