Respiration - Exchange of gases between an organism and its environment.
Pharynx - Shared by digestive and respiratory systems
Larynx - Contains vocal cords - voice box
Trachea - Contains mucus elevator
Bronchi (Bronchus) - One bronchus to each lung
Bronchioles - 1 million per lung
Alveoli - Clusters of tiny air sacs
Epiglottis - A flap of cartilage that covers the entrance to the larynx.
Heimlich maneuver - Pressing up forcibly under the ribcage of a choking person to force a foreign object from the trachea.
Pleural membranes - 2 thin membranes with fluid between them, that keep the two lungs from deflating when you exhale and helps inflate the lungs.
Diaphragm - A thin sheet of muscle that separates the abdominal cavity from the thoracic cavity and is used for breathing.
Intercostal muscles - The muscles between your ribs that help inflate and shrink the chest cavity.
Inspiration - Inhaling. The volume of the chest cavity gets larger so pressure drops and you inhale.
Expiration - Exhaling. The volume of the chest cavity gets smaller so pressure increases and you exhale.
Tidal Volume - The amount of air exchange during a normal breath which is about 500 ml at rest (1/2 liter).
Vital Capacity - The maximum amount of air that can be forced out of the lungs after maximum inhalation. This is about 3 1/2 - 4 1/2 liters.
Respiratory pigments - Makes our blood red.
Hemoglobin - 4 protein chains each with a heme so it can carry 4 O2 molecules. 1 RBC has 280 million hemoglobin molecules.
Heme - An iron complex that carries an O2 or CO2.
Atmospheric air - The air that you breath in.
Exhaled air - The air that you breath out.
Smoking Cigarettes - 1 Cigarette = shortens your life by 10 minutes and 1 Pack of Cigarettes = shortens your life by 3 ½ hours.