Card Set Information
what happens to air as it passes through the nasal cavities?
Warms, moistens, and filters
what is another name for the pharynx?
what are the 3 parts of the pharynx
which lung is bigger and why?
the right lung is bigger because the heart takes up space on the left side of the thoracic cavty
what is ventilaton?
the movement of air in and out of the lungs
what are the 2 phases of ventilation?
inspiration (inhilation), and experation (exhalation)
what are the main muscles of ventilation?
diaphragm & intercostal muscles
where is the diaphragm located?
between the thoracic and abdominal cavity
where are the intercostal muscles?
between the ribs
what happens to air pressure when the volume is increased or decreased?
decrease air pressure when the volume is increased & increase air pressure decrease
what happens to the volume of the thoracic cavity when the diaphragm contracts?
it gets larger
what happens to the volume of the thoracic cavity when the diaphragm relaxes?
it gets smaller
describe what happens during inspiration (3)
1. diaphragm and intercostal muscles contract
2. the volume inside the chest cavity increases
3. enters the lungs
describe what happens during expiration (3)
1. diaphragm and intercostal muscles relax
2. the volume inside the chest cavity decreses
3. exits the lungs
air moving in and out of the lungs
define internal resporation
the exchange of oxygen and carbon dioxide between the tissue cells and the bloodstream
define external resporation
the exchange of oxygen and carbon dioxide between the lungs and bloodstream
define cellular respiration
cells using oxygen and nutrients to produce energy, water, and carbon dioxide
define nasal septum
divides nose into two hollow spaces called nasal cavities
define olfactory receptors
receptors for the sence of smell
cavities in the skull that are around the nasal area
hair like structures that help trap dirt as they enter the nose so trapped particles can be pushed toward the esophogus and swallowed
moistens the air and helps trap pathogens and dust
special piece of cartilage
opening between the vocal cords
a serous membrane that covers the lungs and lines the thoracic cavity
fatty lipid substance
which side of the heart receives freshly oxygenated blood from the lungs and which blood vessels carry this blood
which side of the heart receives blood that is low in oxygen and which blood vessel carries this blood
what is the normal respiratory rate for an adult
what is the normal respiratory rate for a children
what is the normal respiratory rate for an infant