EMTB-11 Ch4c Respiratory

system of the nose, mouth, throat, lungs, and muscles that brings oxygen into the body and expels carbon dioxide.

area directly posterior to the mouth.

area directly posterior to the nose.

area directly posterior to the mouth and nose. It is made up of the oropharynx and the nasopharynx.

leaf-shaped structure that prevents food and foreign matter from entering the trachea.

voice box

ring-shaped structure that forms the lower portion of the larynx.

the structure that connects the pharynx to the lungs - "windpipe"

organs where exchange of atmospheric oxygen and carbon dioxide take place.

the two large sets of branches that come off the trachea and enter the lungs. There are right & left bronchi. (singular- bronchus)

the microscopic sacs of the lungs where gas exchange with the bloodstream takes place.

the muscular structure that divides the chest cavity from the abdominal cavity. a major muscle of respiration.

an active process in which the intercostal (rib) muscles and the diaphragm contract, expanding the size of the chest cavity & causing air to flow into the lungs.

a passive process in which the intercostal (rib) muscles and the diaphragm relax, causing the chest cavity to decrease in size and air to flow out of the lungs.