Nasal & Oral Cavities

Purpose of conchae

increase surface area

Inferior concha bone?

separate bone

Superior and middle conchae bone?

part of ethmoid bone

What is nasal cavity covered in?

mucosa

Purpose of meatus (opening under conchae)

connect nasal cavity with paranasal sinuses

Hollow spaces within cranial bones

paranasal sinuses

Where does sphenoethmoidal recess go to?

sphenoidal sinus

Where does superior meatus go to?

ethmoid sinus

Where does middle meatus go to?

frontal, maxillary, part of ethmoid sinus

Where does inferior meatus go to?

nasolacrimal duct

Bundles of special sensory axons extending from the brain

olfactory tracts

Thickened anterior part of tracts, sit on top of ethmoid

olfactory bulbs

Sensory innervation to nasal cavity and palate

maxillary branch of trigeminal nerve

Maxillary artery

blood to nasal cavity and palate

Ophthalmic artery

blood to superior nasal cavity

2 sets of teeth

primary (deciduous) and permanent

Teeth develop in the _____ of the maxilla and mandible

alveoli

Teeth develop, then erupt through the ____

gums

What is soft palate made of?

muscles covered in mucosa

What do muscles of soft palate do?

elevate soft palate

Two arches that palatine tonsils are located between?

palatoglossal arch and palatopharyngeal arch

Function of mylohyoid muscle

supports floor of mouth

Mylohyoid muscle attachment

mandible and hyoid bone

Posterior belly of digastric muscle attachment

skull to hyoid

Anterior belly of digastric muscle attachment

hyoid to mandible

Function of posterior belly of digastric muscle

elevates hyoid

Function of anterior belly of digastric muscle

depresses mandible

Where to extrinsic tongue muscles attach?

tongue to mandible, hyoid, soft palate, and styloid process

Function of extrinsic tongue muscles?

elevate, depress, protrude, retract tongue

Function of intrinsic tongue muscles?

make up body of tongue and change its shape

What nerve innervates most extrinsic and intrinsic tongue muscles?

CN 12 (hypoglossal)

Line separating two regions of the tongue

sulcus terminalis

5 aspects of taste

sweet, salty, bitter, sour, umami

What does maxillary artery supply blood to in oral cavity?

palate, mandible, teeth

What does lingual artery supply blood to in oral cavity?

floor of mouth and tongue

Maxillary branch of trigeminal nerve

sensory innervation to upper teeth, maxilla, hard and soft palate

Mandibular branch of trigeminal nerve

Sensory innervation to mandible, floor of mouth, tongue

All cranial nerves involved in oral cavity

5, 7, 9, 12