respiratory system 1

the organs of respiratory system include NPLTBL

passageways from the nose to the larynx

passageways from the trachea to the alveoli

the only externally visible part of the respiratory system

during breathing, air enters the nose by passing through the _

the interior of the nose consists of _, divided by a midline _

the olfactory receptors for the sense of smell are located in the _ in the slit like superior part of the nasal cavity, just beneath the ethmoid bone

the rest of the mucosa lining the nasal cavity, called the _, rest on a rich network of a thin-walled veins that warms the air as it flows past

enzyme that destroys bacteria chemically

the lateral walls of the nasal cavity are uneven, owing to three mucosa-covered projections called

greatly increase the surface area of the mucosa exposed to the air. it also increase the air turbulence in the nasal cavity

the nasal cavity is separated from the oral cavity below by a partition called

anterior palate that is supported by bone

unsupported posterior palate

it is a genetic defect described as the failure of the bones forming the palate to fuse medially, results in breathing difficulty as well as problems with oral cavity functions, such as breastfeeding and speaking.

the nasal cavity is surrounded by a ring of _ located in the frontal, sphenoid, ethmoid, and maxillary bones

drain tears from the eyes, also empty into the nasal cavities

it is the inflammation of the nasal mucosa

sinus inflammation, which is difficult to treat and can cause marked changes in voice quality

commonly called the throat, serves as a common passageway for food and air.

the pharynx is a muscular passageway about _ long that vaguely resembles a short length of red garden hose.

pharynx is continuous with the nasal cavity anteriorly via the _

the three regions of pharynx

drain the middle ears, open into the nasopharynx

clusters of lymphatic tissue called _ are also found in the pharynx

also called adenoid, is located high in the nasopharynx

are in the oropharynx at the end of the soft palate

lies at the base of the tongue

protect the openings of the pharyngotympanic tubes in the nasopharynx.