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Anatomy > Anatomy of the Nasal and Oral Cavities (CVR) > Flashcards

Anatomy of the Nasal and Oral Cavities (CVR) Flashcards

1
Q

What separates the left and right nasal cavities?
What is it made up of

A

Thin midline septum
Formed of cartilage and bone

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2
Q

What separates the nasal cavities from the oral cavity

A

Hard palate

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3
Q

What forms the superior part of the posterior septum?

A

Perpendicular plate of the ethmoid bone

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4
Q

Three projections of bones on the lateral wall of the nasal cavity

A

conchae (turbinates)

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5
Q

What are the spaces beneath the conchae called

A

Meatuses

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6
Q

What happens to air as it travels through the meatuses (3 points)

A

Warmed
Humidified
Filterered

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7
Q

What separates the nasal cavity from the cranium and the brain?

A

Cribriform plate

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8
Q

What is the structure of the cribriform plate

A

Section of bone perforated with tiny holes

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9
Q

What receptors does the mucousa in the upper part of the nasal cavity contain

A

Olfactory receptors

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10
Q

What nerves travel through the perforations in the cribriform plate

A

Olfactory nerves

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11
Q

Sensory innervation of the nasal cavity

A

Trigeminal nerve (CN V)

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12
Q

What does the maxillary artery supply and what is it a branch of

A

Supplies Nasal cavity and branch of external carotid artery

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13
Q

Where does the frontal sinus lie?

A

Anterior to the frontal bone

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14
Q

Where does the Ethmoid sinus lie

A

Within the ethmoid bone
Superior to nasal cavity and medial to the orbits

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15
Q

Where does the Sphenoid sinus lie?

A

In the sphenoid bone

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16
Q

Where does the Maxillary sinus lie

A

Within the maxillae of the facial skeleton

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17
Q

Where does the frontal sinus drain into

A

The middle meatus

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18
Q

Where does the sphenoid sinus drain into

A

Spheno-ethmoidal recess

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19
Q

Where does the ethmoid air cells drain into in the nasal cavity

A

Superior and middle meatuses

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20
Q

Where does the maxillary sinus drain into

A

The middle meatus

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21
Q

How does the opening into the middle meatus lie

A

Superomedially

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22
Q

What duct drains tears that lubricate the anterior surface of the eye? where does the duct open into?

A

Nasolacrimal duct
And duct opens into inferior meatus

23
Q

What is the middle ear?
Where is it located?

A

Small cavity in the temporal bone and modified for hearing

24
Q

What connects the middle ear and the nasopharynx

A

Auditory tube

25
Q

Where is the auditory tube located? What surrounds it

A

Lateral wall of nasopharynx
Slight bulge, formed by tonsillar tissue

26
Q

Function of auditory tube

A

Allows air to pass into middle ear so that pressure of either side of the eardrum is equal

27
Q

What is the hard palate made up of and what is the soft palate made up of

A

Hard palate-bone-Palatine process of maxilla and palatine bone (anteriorly)
soft palate-muscle (posteriorly)

28
Q

What is the hard palate composed of

A

Palatine processes of the maxillae
Horizontal plates of the palatine bones

29
Q

Functions of Hard palate (3)

A

Prevents food entering nasal cavity
Pushing our tongue against it during swallowing, forcing food and fluids back into oropharynx
Pushing our tongue against it to articulate certain sounds

30
Q

What projection of the soft palate can be seen in the mouth?

A

Uvula

31
Q

What does the soft palate do during swallowing

A

muscles of it contract, elevating soft palate closing off the nasopharynx from the oral cavity

32
Q

What is an epistaxis

A

Nosebleed

33
Q

What is the superior boundary of the oral cavity

A

Hard and soft palate

34
Q

Where are the teeth embedded superiorly and inferiorly

A

superiorly- 16 in maxilla
Inferiorly-16 in mandible

35
Q

What are the teeth composed of

A

Inner pulp
Dentin
enamel

36
Q

What does the inner pulp contain in teeth

A

Blood vessels and nerves

37
Q

Where does the tongue extend to and from

A

Anterior part lies in oral cavity
Posterior part extends into nasopharynx

38
Q

What does the tongue contain on its superior surface essential for taste?

A

Papillae (taste buds)

39
Q

What do the intrinsic and extrinsic nerves of the tongue do respecively?

A

Intrinsic- change shape of tongue
Extrinsic- move the tongue (don’t originate in tongue)

40
Q

What nerve innervates the muscles of the tongue

A

Hypoglossal tongue

41
Q

What nerve innervates taste in the anterior two thirds of the tongue

A

Facial nerve (CN VII)

42
Q

what nerve innervates general sensation in the anterior two thirds of the tongue?

A

Trigeminal nerve (CN V)

43
Q

What nerve innervates taste and sensation in the posterior third of the tongue

A

Glossopharyngeal nerve (CN IX)

44
Q

What 3 vessels supply the oral cavity?
What are they branches of?

A

Lingual maxillary and facial arteries
Branches of the external carotid artery

45
Q

4 tonsils in the oral cavity

A

Pharyngeal - roof of nasopharynx
Tubal- opening of auditory tube
Palatine - Lateral wall of oropharynx
Lingual - posterior tongue

46
Q

Three salivary glands that secrete in to the oral cavity

A

Parotid
Submandibular
Sublingual

47
Q

Where does saliva from the parotid gland empty into the mouth via

A

Via the parotid duct

48
Q

Where does the facial nerve divide into 5 branches?

A

In the parotid gland

49
Q

What nerve innervates the parotid gland

A

The glossopharyngeal nerve

50
Q

Where is the parotid gland located

A

Posterior part of mandible

51
Q

Where are the submandibular glands located and where do they open up into?

A

Inferior to mandible, open up into floor of mouth

52
Q

What nerve innervates the submandibular and sublingual glands

A

Facial nerve (CN V)

53
Q

Where do the sublingual glands lie

A

Floor of mouth

54
Q

Name structures a-b

A

a-Pharyngeal tonsils
b-Tubal tonsils
c-Palatine tonsil
d-Lingual tonsil

Anatomy (20 decks)

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