Nasal Cavity and Paranasal Sinuses

What nerves in the nasal cavity are responsible for special sensory (smell), somatic sensory (2 nerves), and visceral motor?

Know the externally visible bones of the nose.

What are the cartilages of the nose (there are 3)

Know the bones of the lateral wall of the nasal cavity. What are the three labeled recesses?

Know the spaces in the nasal cavity.

Know the bony components of the nasal septum.

Label and know the function of the nasal conchae.

What are the five main functions of the nose? What mucosa lines the nasal cavity?

Where in the nasal cavity would you find olfactory mucosa? What nerve supplies the olfactory mucosa?

What regions of the nasal cavity are respiratory mucosa? By what cranial nerve are they supplied?

Where does most of the air you breathe in go in the nasal cavity? Describe the passage of air to the nasopharynx. What are the benefits of a wide vs narrow internal nasal passage?

Know the sensory and parasympathetic innervation to the lateral nasal wall. Include the nerve names and from which CN they branch from. Also include parasympathetics.

Know the sensory and parasympathetic supply to the nasal septum.

Know the blood supply to the lateral nasal wall. Know from which major/distributing arteries these smaller arteries derive from.

Know the blood supply to the nasal septum. Know from which major/distributing arteries these smaller arteries derive from.

Know the drainage of the vasculature of the nasal cavity.

What are the functions of the paranasal sinuses?

Know the sinuses/their respective openings. Know which nerves innervate which sinuses and which nerve fibers they carry.

Each paranasal sinus communicates with the nasal cavity via openings called _____. The sinuses can become inflamed and drainage of fluid to the nasal cavity is disrupted. This is _______. Know the labeled sinus and its innervation.

Know the ostia of the paranasal sinuses. The frontal sinus is not labeled but know its openings as well.

Which of the paranasal sinuses is the largest? Describe its location relative to other features. What is the clinical significance of the high ostium of the maxillary sinus?

Label and know the clinical implications for the passing of a nerve (which one?) through the roof of the maxillary sinus.

What is indicated clinically in the radiograph

Removal of maxillary teeth can allow the sinus to expand into that space (pneumatization).