tiny air sac at the end of a bronchiole in the lungs that provides surface area for gas exchange to occur
HCO3 -, blood buffer
One of the fine branches of the bronchus that transport air to alveoli.
branch of the trachea (windpipe) that is a passageway into the lung
the compound formed when carbon dioxide combines with hemoglobin
An enzyme present in erythrocytes (as well as in other places) that catalyzes the conversion of CO2 and H2O into carbonic acid (H2CO3).
Large, flat muscle at the bottom of the chest cavity that helps with breathing
a flap of cartilage that covers the windpipe while swallowing, and prevents food from entering.
the act of expelling air from the lungs
exchange of gases between the atmosphere and blood
organs that exchange oxygen and carbon dioxide with water
slit-like opening between the vocal cords in the larynx
Iron-containing nonprotein portion of the hemoglobin molecule.
iron-containing protein in red blood cells that carries oxygen for delivery to cells
The movement of air into the respiratory tract. an active process, requiring contraction of the diaphragm.
exchange of gases between the blood and the cells of the body
voice box; passageway for air moving from pharynx to trachea; contains vocal cords
two spongy organs, located in the thoracic cavity enclosed by the diaphragm and rib cage, responsible for respiration
the bright red hemoglobin that is a combination of hemoglobin and oxygen from the lungs
A measure of the concentration of one gas in a mixture of gases; the pressure exerted by a particular gas in a mixture of gases (for instance, the pressure exerted by oxygen in air).
throat; passageway for food to the esophagus and air to the larynx
the bodily process of inhalation and exhalation
oval lymphatic tissues on each side of the pharynx that filter air to protect the body from bacterial invasion; also called palatine
membranous tube with cartilaginous rings that conveys inhaled air from the larynx to the bronchi
the movement of air in and out of the lungs
tissue in the larynx that vibrates with the passage of air to form sounds