Ventilation
The gas needed by cells to release energy from food during metabolism
oxygen
The enlarged upper end of the trachea that contain the vocal cords
larynx
A cone shaped spongy organ of respiration contained within the thorax
The substance released by coughing or clearing the throat
sputum
a cavity or channel
sinus
A gas produced by energy metabolism in cells and eliminated through the lungs
Carbon Dioxide
The air passageway that extends from the larynx to the bronchi
trachea
Tiny air sacs in the lungs through which gases are exchanged between the atmosphere and the blood in respiration
alveoli
The iron containing pigment in red blood cells that transports oxygen
hemoglobin
membranous folds on either side of the larynx that are important in speech production
vocal folds
The act of drawing air into the lungs; inhalation
Inspiration
the throat
pharynx
The dome shaped muscle under the lungs that flattens during inspiration
diaphragm
A substance that decreases surface tension within the alveoli and eases lung expansion
surfactant
A measure of how easily the lungs expand under pressure
compliance
The act of breathing out or expelling air from the lungs; exhalation
expiration
The organ of the face used for breathing and for housing receptors for the sense of smell
nose
One of the larger air passageways in the lungs. Begins as 2 branches of trachea and then branch out into each lung
bronchus
The act of coughing up material from the respiratory tract
expectoration
The nerve that activates the diaphragm
The movement of air into and out of the lungs
A leaf shaped cartilage that covers the larynx during swallowing to prevent food from entering the trachea
epiglottis
bronchiole
An acid formed by carbon dioxide when it dissolves in water
carbonic acid
the space between the lungs together with the organs contained in this space
mediastinum