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S&F: Exam 2 > Nasal Cavity > Flashcards

Flashcards in Nasal Cavity Deck (20):
0

Nasal fracture

Breaks the cribiform plate

=>CSF leakage from nose

1

Boundaries of Nasal Cavity

Roof: Nasal, Frontal, Ethmoid, Sphenoid

Floor: Maxillary, Palatine

Medial: Cartilage, Ethmoid, Vomer

Lateral: Nasal, Maxillary, Inferior Concha, Palatine, Ethmoid, Sphenoid

2

Ethmoidal Bulla

Rounded elevation below middle concha formed by Middle Ethmoidal air cells

3

Hiatus Semilunaris

C-shaped slit below ethmoidal bulla

4

Infundibulum

Anterior part of the hiatus semilunaris

5

Sphenoethmoidal Recess

Contains the olfactory foramina

6

Somatic Sensory nerves of the nasal cavity

1. Anterior Ethmoidal (V1)

2. Nasal branches (V2)

3. Nasopalatine (V2)

7

Arteries of Nasal Cavity

1. Anterior/Posterior Ethmoidal

2. Sphenopalatine

3. Facial (branches)

8

Epistaxis

"Nosebleed"

-Is extensive due to anastomoses in nose
*If spurting = arterial

9

Paranasal Air Sinuses

-Lightens bones but allows for spread of infxn

1. Frontal

2. Ethmoid (infxn=>orbit)

3. Sphenoid

4. Maxillary (contains roots of teeth)

10

Primary Palate

Anterior to incisive foramen; formed by the fusion of the medial processes

11

Posterior Palate

Posterior to incisive foramen; formed by fusion of maxillary process

12

Anterior Cleft Palate

"Cleft lip"

-Failure of fusion of medial nasal processes

13

Tonsillar Bed

Formed by superior pharyngeal constrictor muscle and stylopharyngeus

-Receives blood from tonsillar branches of facial artery; drains to pharyngeal plexus of veins

*IX can be damaged here

14

Deglutition

1. Bolus formed by tongue

2. Styloglossus and mylohyoid push bolus back

3. Tensor palati, levator palati, and stylopharyngeus elevate the soft palate to block the nasal cavity

4. Pharyngeal constrictors contract and pull food down

15

Nodes enlarged in tonsillitis

Jugulo-digastric lymph nodes

16

Openings into Sphenoethmoidal recess

1. Olfactory foramina

2. Sphenoid air sinus

17

Openings into Superior Meatus

1. Posterior ethmoidal air cells

18

Openings into Middle Meatus

1. Middle ethmoidal air cells

2. Anterior Ethmoidal air cells

3. Maxillary sinus

4. Frontal sinus

19

Openings into Inferior Meatus

Nasolacrimal duct