diaphragm contracts, rib cage rises and increases the volume of the chest cavity, air rushes into the lungs
diaphragm relaxes & moves up into original dome shape. This decreases the chest volume & moves air out of the lungs
a sheet of muscle that separates the organs of the chest cavity from those of the abdminal cavity. Moves up and down to aid in respiration.
tiny air sacs within the lungs where gas exchange occurs between air & blood. 1 cell thick and located at the end of the bronchioles.
two spongy organs that are large & sac-like in the thoracic cavity enclosed by the diaphragm and rib cage. where external respiration happens
the cavity behind the nose and above the roof of the mouth that filters air and moves mucous and inhaled contaminants outward and away form the lungs.
The fine hairlike projections from certain cells such as those in the respiratory tract that sweep in unison and help to sweep away fluids and particles
The main air tube leading into the respiratory system. The trachea is made of alternating rings of cartilage and connective tissue.
a flap of cartilage that prevents food from entering the trachea when eating and opens to allow breathing and speaking
Has ring of cartilage to keep pathway open, branches off trachea in a Y shape to take air into lungs
caused by viruses that mutate regularly- can be very serious for infants, elderly & those with other health complications
inflammation & excess mucus production in the bronchi & bronchioles, caused by viral or bacterial infection or by chemical irritants (ex. smoke) - causes narrowing of the air passageways, making breathing & gas exchange difficult, leads to coughing
chronic allergic disorder characterized by episodes of severe breathing difficulty, coughing, and wheezing using the air passage to narrow & causes shortness of breath
drug delivered directly to the lungs by an inhaler, stimulate air passages to increase in diameter
obstructive pulmonary disease, overexpansion of the alveoli with air and destructive changes in their walls resulting in loss of lung elasticity and gas exchange
uncontrolled growth of cells in lung tissue Causes:smoking Treatment:chemo, surgery, radiation
system responsible for taking in oxygen and releasing carbon dioxide using the lungs
tiny, thin-walled blood vessels that allow the exchange of gases and nutrients between the blood and the cells of the body