respiratory system 2

if the pharyngeal tonsil becomes inflamed and swollen, it obstructs the nasopharynx and forces the person to breathe through the mouth.

also called voice box, routes air and food into proper channels and plays role in speech.

larynx is located inferior to the pharynx, it is formed by _ and a spoon-shaped flap of elastic cartilage, the _

the largest hyaline cartilages is th shielded-shaped _, which protrudes anteriorly and is commonly called the _

"guardian of the airway", protects the superior opening of the larynx

if anything other than air enters the larynx, a _ is triggered to prevent the substance from continuing into the lungs

vibrate with expelled air, allows us to speak

the slitlike passageway between the vocal folds is called _

also called windpipe, has a length of 10-12 cm or 4 inches to the level of the 5th thoracic vertebra

the trachea is fairly rigid because its walls are reinforced with C-shaped rings of _

lies next to the esophagus and completes the wall of the trachea posteriorly

a procedure in which the air in a person's own lungs is used to pop out, or expelm an obstructing piece of food, has saved many people from becoming victims of choking

surgical opening of the trachea

area of bifurcation

cells that produces mucus

formed by the division of the trachea.

the _ is wider, shorter, and straighter bronchi

are fairly large organs. they occupy the entire thoracic cavity except for the most central area

houses the heart, the great blood vessels, bronchi, the esophagus, and the other organs

the narrow superior portion of each lung, is just deep to the clavicle

the broad lung area resting on the diaphragm is the _

each lung is divided into lobes by _

the left lung has _ lobes, and the right lung has _ lobes

the surface of the lung is covered with its own visceral serosa, called the _

the walls of thoracic cavity are lined by the _

allows the lungs to glide easily over the thorax wall during breathing and causes the pleural layers to cling together

inflammation of the pleurae, can be caused by insufficient secretion of pleural fluid.