the process of the exchange of air between the lungs and the environment, including inspiration and expiration.
the passages from the trachea to the left and right lung.
a sheet of muscle that seprates the organs of the thoracic cavity from those of the abdominal cavity.
an enzyme found in red blood cells that speeds the conversion of carbon dioxide and water to carbonic acid.
the inflammation of the bronchial tubes.
the involuntary muscle of the heart.
a band of connective tissue that joins muscle to bone.
the muscle that must contract to straighten a joint.
a compound in muscle cells that releases a phosphate to ADP and helps regenerate ATP supplies in muscle cells.
increased muscle contraction produced by the combination of stimuli.
inspiratory reserve volume
all processes involved in the exchange of oxygen and carbon dioxide between cells and the environment, including breathing, gas exchange, and cellular respiration.
the smallest passageways of the respiratory tract.
a muscle that raises and lowers the rib cage.
a substance capable of neutralizing acids and bases, thus maintaining the original pH of the solution.
a respiratory disorder characterized by an overinflation of the alveoli.
the involuntary muscle found in the lining of many organs.
a pair of skeletal muscles that are arranged in pairs and that work against each other to make a joint move.
a thread of contractile proteins found within muscle fibres.
a contractile protein found in thin myofilaments.
the state of constant muscle contraction caused by sustained nerve impulses.
sacs of the lung in which gas exchange occurs.
the oxygen-carrying molecule in red blood cells.
a specialized nerve receptor that is sensitive to specific chemicals.
a respiratory disorder characterized by reversible narrowing of the bronchial passages.
the voluntary muscle that makes the bones of the skeleton move.
the muscle that must contract to bend a joint.
the delicate sheath that surrounds muscle fibres.
a contractile protein found in thick myofilaments.
total lung capacity