| Term | Definition |
|
Upper respiratory tract |
Respiratory structure that is comprised of the nose and pharynx |
|
Lower respiratory tract |
Respiratory structure that is comprised of the larynx, trachea, bronchi, and lungs |
|
Conducting division |
Division of the respiratory system made of tubes and cavities that move air in and out of the lungs |
|
Respiratory division |
Division of the respiratory system where gas exchange occurs |
|
External nose |
Part of the nose that is composed of bone and hyaline cartilage |
|
Nares |
Part of the internal nose that are openings into the throat, one for each nostril; part of the nasopharynx |
|
Palantine bone |
Forms the floor of the nose |
|
Paranasal sinuses |
Structures of the internal nose that are cavities in the cranial and facial bones; opens into nasal cavities |
|
Internal nose |
Contains the nares, paranasal sinuses, openings of the lacrimal ducts, and the palantine bone |
|
Septum |
Part of the internal nose that is made of bone and cartilage; divides into left and right halves |
|
Nasal cavities |
The space between the nose and throat |
|
Function of the nose |
Warms, moistens, and filters incoming air |
|
Function of the nose |
Contains olfactory receptors for smell |
|
Function of the nose |
Helps modify sound for proper speech |
|
Pharynx (Throat) |
Funnel shaped passage from base of skull to C6; divided into the nasopharynx, oropharynx, and laryngopharynx |
|
Nasopharynx |
Most superior portion that lies behind the nasal cavity |
|
Eustachian tubes |
Openings in the nasopharynx that connect to the middle ear and prevents pressure buildup |
|
Oropharynx |
Middle portion of the pharynx located behind the oral cavity, below the soft palate; passage for air and food; contains two pairs of tonsils (palantine and lingual) |
|
Fauces |
Part of the oropharanx that is the opening into the mouth |
|
Laryngopharynx |
Most inferior portion of the upper respiratory tract that extends down to the larynx and esophagus; passage for air and food; splits at the bottom into channels for food and air |
|
Nasopharynx |
Passage for air only; contains part of the tonsils (pharyngeal), nares, and eustachian tubes |