The provider ends the provider-patent relationship without making sure the patient’s healthcare needs are met.

An injury that only affects the surface of the skin and results in mild oozing of blood. It is commonly known as “road rash.”

A way for a person to spell out ahead of time the care they would like to receive should they become unable to state their wishes. Examples of advance directives include Comfort One and POLST.

A procedure that is likely to produce a fine mist of suspended airborne particles (aerosol). Airway suction and  bag-valve-mask ventilation are examples of AGPs. Vomiting and coughing can also generate aerosols. A respirator mask, such as an N-95, protects against the greater risk of infection associated with an aerosol.

The location of air exchange in the body. Lung passages end in tiny sacs known as alveoli, which are surrounded by small blood vessels (capillaries). Oxygen diffuses across the thin membrane of each alveolus and the thin membrane of the capillary, while carbon dioxide makes the journey in reverse. "Alveoli" is plural; "alveolus" is singular.

An extremity or part of it of has been cut or torn completely free from the body.

A life-threatening allergic reaction usually associated with low blood pressure, shortness of breath and wheezing, and nausea and vomiting.

When describing an injury or other exam finding, the finding is described as if the patient were standing up with both arms slightly outstretched and palms facing forward. For example, even if the patient is lying supine, “superior” will always reference the top of the head and not the part that may be farthest from the ground in the patient's current position.

A break in a bone that leaves the limb at an angle.

A blood vessel that carries blood away from the heart. The blood usually carries oxygen (except for the pulmonary artery which carries de-oxygenated blood from the heart to the lungs).