Thorax 12 - Nose, Nasal Cavity, to Nasopharynx and Paranasal Air Sinuses Flashcards Preview

MD3001 > Thorax 12 - Nose, Nasal Cavity, to Nasopharynx and Paranasal Air Sinuses > Flashcards

Flashcards in Thorax 12 - Nose, Nasal Cavity, to Nasopharynx and Paranasal Air Sinuses Deck (18)
1

What is the function of the nose and nasal cavity?

Warm, humidify and filter inhaled air; sense of smell - olfaction

2

What is the function of the muscles in and surrounding the nose?

Altering the diameter of the nostrils/naris

3

What do adjacent paranasal air sinuses open into?

Meati

4

Where does the ethmoid lie?

Upper part of the nasal cavity - forms the majority of its upper part

5

Where does the maxilla lie?

Forms the floor of the nasal cavity

6

What is a key foramen to bear in mind when considering structures that are going t pass into the cavity?

Sphenopalatine foramen

7

What is the function of the conchae/turbinates?

Makes air turbulent as it passes into the nasal cavity

8

In which direction must a nasogastric tube be passed into the nasal cavity and why?

Horizontal, since the floor of the cavity (maxilla and palatine bones) lies horizontally

9

What lies immediately lateral to the nasal cavity?

The orbits (eyes) and ophthalmological things

10

What lies immediately superior to the nasal cavity?

The brain

11

Where does the opening to the maxillary sinus lie?

High up in its medial wall

12

Secretion of mucus requires what type of nervous supply?

Parasympathetic

13

The trigeminal nerve derives from the 5th V Cranial Nerve and divides 3 times. What are the two key divisions?

Ophthalmic (V1)
Maxillary (V2)

14

Branches of the Ophthalmic nerve (V1) are accompanied by branches of what vessel?

Ophthalmic branch of the internal carotid artery

15

The ophthalmic nerve (V1) splits into two branches; what are their names?

Anterior
Superior (medial)

16

The maxillary nerve (V2) splits into two branches; what are their names?

Posterior
Inferior (medial)

17

What is the highly vascular, anastomosis site area on the anterior aspect of the septum which is a common initiation area for nosebleed (epistaxis)?

Little’s or Kiesselbach’s Area

18

What are the three most important sinuses?

Middle
Frontal
Maxillary

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