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1 - PBS2 > 42 - Nasal Cavity, Nasopharynx > Flashcards

42 - Nasal Cavity, Nasopharynx Flashcards

1
Q

Cartilage in the nose

A

Lateral cartilages
Septal cartilage
Alar cartilages

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2
Q

Bony parts of nose

A

Frontal bone above nasal bones superiorly

Frontal process of maxilla laterally

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3
Q

Bones that make up roof of nasal cavity

A

Ethmoid bone.

Sphenoid bone makes up deepest part of nasal cavity roof

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4
Q

Shape of ethmoid bone in a coronal plane

A

M-shaped.

Forms roofs, lateral walls of nasal cavity

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5
Q

What separate two halves of nasal cavity?

A

Ethmoid bone, vomer (vomer is more inferior)

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6
Q

Openings of nasal cavity

A

Anterior and posterior nares

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7
Q

Effect of breaking ethmoid bone (EG with a bad nose break)

A

Rinorrhoea (leakage of CSF from breaking meninges)
Bleeding
Infection

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8
Q

Part of nasal cavity not lined by mucous membrane

A

Vestibule (lined by skin and hair).

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9
Q

Two broad divisions of medial nasal mucosa

A 
Olfactory area (with first order sensory nerves from olfactory bulb)
Respiratory area (ciliated surface)
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10
Q

Role of cilia of respiratory area of nasal mucosa

A

Beat towards vestibule.

Move mucus out of nose

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11
Q

Surface feature of lateral walls of nasal cavity

A

Turbinate bones: superior concha, middle concha, inferior concha

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12
Q

Concha which is formed by its own bone

A

Inferior concha

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13
Q

What makes up the superior and middle conchae?

A

Ethmoid bone

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14
Q

Problem with having conchae lining nasal cavity

A

If inflamed (because have a highly vascularised mucosal lining), can easily block nose

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15
Q

Space underneath conchae

A

Superior, middle, inferior meatus

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16
Q

What are contained in the superior, middle and inferior meati?

A

Openings for the paranasal sinuses

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17
Q 
Paranasal sinuses
1
2
3
4
A

Frontal
Ethmoid (in lateral plate of ethmoid bone particularly)
Sphenoid
Maxillary

18
Q

Sinuses that drain downwards into nasal cavity

A

Frontal, ethmoid and sphenoid

19
Q

Why is sinusitis more associated with maxillary sinus?

A

Maxillary sinus opening into nasal cavity is high up on medial wall of sinus.
Doesn’t drain with gravity into nasal cavity, so difficult to clear.

20
Q

Where is the opening of the maxillary sinus?

A

Middle meatus

21
Q

Orifice of the nasolacrimal duct

A

In the inferior meatus

22
Q

Drainage of tears

A

Lacrimal gland above eye makes tears

Drain through nasolacrimal duct into the inferior meatus

23
Q

Medical term for a nose bleed

A

Epistaxis

24
Q

Blood supply of posterior quadrant of nasal cavity (lateral and medial)

A

Spheno-palatine artery (a branch of the external carotid).

High pressure artery.

25
Q

Blood supply of superior quadrant of nasal cavity (lateral and medial)

A

Anterior and posterior ethmoid arteries (branches of ophthalmic artery)

26
Q

Blood supply of inferior quadrant of nasal cavity (lateral and medial)

A

Greater palatine artery.

Also supplies roof of the mouth, travels through a hole in the hard palate, into nose

27
Q

Blood supply of anterior quadrant of nasal cavity (lateral and medial)

A

Lateral nasal branches of facial artery

28
Q

Nerve supply of the nasal cavity

A

Anterior-superior part innervated by ophthalmic division of trigeminal (anterior ethmoidal nerves, nasociliary nerve).

Posterior-inferior part innervated by maxillary division of trigeminal (greater, lesser palatine nerves).

29
Q

Divisions of the pharynx

A

Nasopharynx
Oropharynx
Laryngopharynx

30
Q

What forms larynx?

A

Muscular sling around the back of the nasal cavity, oral cavity and larynx

31
Q

Muscles forming sling for pharynx

A

Superior, middle and inferior constrictor muscles.

These join posteriorly at the median raphe.

32
Q

Attachment of the superior constrictor

A

Buccinator

33
Q

Attachment of the middle constrictor

A

Hyoid bone

34
Q

Attachment of the inferior constrictor

A

Thyroid and cricoid cartilage

35
Q

Superior border of the nasopharynx

A

Sphenoid bone

36
Q

Inferior border of the nasopharynx

A

Uvula

37
Q

Location of adenoids

A

Roof of the nasopharynx (pharyngeal tonsils)

38
Q

Where is the opening of the auditory tube?

A

Lateral wall of the nasopharynx

39
Q

Name for muscle that is internal pharyngeal muscle that attaches to auditory tube

A

Salpingopharyngeus

40
Q

Effect of salpingopharyngeus contraction

A

Opens auditory tube.

1 - PBS2 (96 decks)

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