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H&N > Oral Cavity > Flashcards

Oral Cavity Flashcards

1
Q

The tongue is divided into left and right halves by
It’s parts and surfaces

A

Median sulcus

Oral
Oropharynx
Root

Dorsal
Ventral

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2
Q

The dorsal surface I’d divided into ___ by

A

Ant. 2/3
Pst.1/3
Sulcus terminalis

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3
Q

Sulcus terminalis faces backwards and is marked by a pit called

A

foramen cecum

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4
Q

The ant. 2/3 is rough contain 3 different kinds of papillae called
And it’s cover in thin mucosa

A

Filliforn– no tastebud
Fungiform
Folaite
Vallate

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5
Q

Xteristic of the pst. 1/3

A

Contains no papillae
It shows nodular surface due to underlying lymphatic nodules and tonsils

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6
Q

Arrange the papillae base on its position

A

Vallate– arranged in v shape In front of the terminalis sulcus
At the lateral side of the tongue close to the base is–foliate
Filliform– at the center close to the midline & sensitive to touch
Fungiform–at the tip(apex)

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7
Q

The inf. /ventral surface of the tongue is connected to the mouth by?

A

Frenulum of the tongue

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8
Q

Lat. To the frenulum is the deep lingual vein and lat. To it is a mucosa fold called

A

Plica fimbriata

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9
Q

In general what’s the function of the extrinsic and intrinsic muscles

A

In general, extrinsic muscles alter the position of the
tongue, and intrinsic muscles alter its shape

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10
Q

List the intrinsic muscles
What’s the xteristic of the intrinsic muscle?

A

4
Sup. Longitudinal
Inf. Longitudinal
Tranvese
Vertical muscles

It’s confined to the tongue i.e no bony attachment

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11
Q

List the extrinsic muscles
What’s the xteristic of the extrinsic muscle?

A

4
Palatoglossus
Genioglosus
Hypoglosus
Styloglosus

Connects the tongue to other supporting structures like hard, soft palate and bones(mandible styloid process, hyoid bone)

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12
Q

The four intrinsic and four extrinsic
muscles in each half of the tongue are separated by a

A

median fibrous lingual
septum

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13
Q

What muscles are responsible for the following movements
1. Protrusion
2. Retraction
3. Elevation
4. Depression

A
  1. Genioglosus
  2. Stylo and hyo glossus
  3. Stylo and palato glossus
  4. Genio and hyo glossus
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14
Q

What motor nerve innervate the tongue

A

Both intrinsic & extrinsic receives motor innervation from CN XII the hypoglossal nerve
Except palatoglossus muscle by pharyngeal plexus

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15
Q

What sensory nerve innervate the tongue

A

Ant. 2/3
General sensation of the ant. 2/3 is by lingual nerve
For special sense of the ant. 2/3 is by chorda tympani ( taste fibers
from CN VII)
Pst. 1/3 & Base
For general and special is glossopharyngeal nerve

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16
Q

Arteries and veins of the tongue

A

Lingual A(Dorasal) supplies the root of the tongue and Palatine tonsil
Deep Lingual A supplies the body of the tongue
Sublingual A supplies the floor of the mouth and sublingual gland

Deep lingual vein located @ the apex drains pst. to sublingual V and then to inferior jugular vein

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17
Q

Lymphatic drainage of the tongue

A

Ant. 2/3
Submandibular and Deep cervical nodes

                  Pst. 1/3 Deep cervical nodes( jugulodigasric mainly)
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18
Q

What’s the medical term for tongue tied and what causes it?

A

Ankilogosia due to large frenulum

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19
Q

During angina pectoris drugs like nitroglycerin is sprayed underneath the tongue for sublingual absorption

A
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20
Q

What nerves are responsible for gag reflex

A

Vagus (X) and glossopharyngeal N (IX)

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21
Q

The hard palate is formed by
And bounded by

A

Palatine processes of the maxilla at the front
Horizontally by plates of Palatine bones
Alveolar arch

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22
Q

The undersurface of the hard palate is covered by

A

Mucoperiosteom

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23
Q

What part of the hard palate has incisive foramen

A

Directly behind the central incisors at the ant. Midline
A route for nasoplalatine nerve

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24
Q

What are the composition of the soft palate

A

Mucos membrane (covers the upper and lower surfaces)
Palatine aponeurosis
Muscles

25
Q

What are the muscles of the soft palate

A

Tensor veli palatini
Levator veli palatini
Musculus uvulae
Palatoglossus
Palatopharyngeus

26
Q

ACTIONS OF SOFT PALATE MUSCLES
READ

A
27
Q

Features of the Palatine aponeurosis

A

Fibrous sheath attached to Pat. Part of hard palate
It’s the expanded tendon of tensor veli palatini muscle

28
Q

What’s the motor nerve supply for the soft palate

A

Supplied by pharyngeal plexus except tensor veli palatini
Tensor veli palatini = mandibular division of the trigeminal nerve

29
Q

Sensory innervation of the soft palate

A

Glossopharyngeal nerve supplies the soft palate

30
Q

What’s the blood supply to the palates

A

Branches of the maxillary artery
Greater and lesser Palatine artery, Sphenopalatine A
Ascending Palatine branch of facial artery
Ascending pharyngeal of the external carotid artery

31
Q

What are the four main salivary gland

A

Major– 2 Parotid and 2 Submandibular gland
Minor– Sublingual and Multiple minor gland

32
Q

What’s the largest salivary gland

A

Parotid gland

33
Q

The parotid gland is mostly of _____ acini

A

Serous

34
Q

What’s the secretorymotor nervation to the parotid gland

A

Parasympathetic secretorymotor nervation arises from glossopharyngeal N

35
Q

What’s the route of the glossopharyngeal nerve to the parotid gland

A

Via tympanic branch–lesser petrosal N–Otic ganglion— Auriculotemporal Nerve

36
Q

What are the structures within the parotid gland

A

Maxillary A&V, Superficial temporal A&V,
Facial N, Mandibular, Buccal, cervical, Temporal, Z ygomatic branch

37
Q

The submandibular gland consists of ____ type of acini

A

Serous and mucous acini

38
Q

What’s the position of the submandibular gland

A

It lies below the lower boder of the mandible divided into superficial and deep by the mylohyoid muscle

39
Q

What’s the arterial supply to the submandibular gland

A

Submental artery

40
Q

What’s the secretorymotor innervation to the submandibular gland

A

Parasympathetic secretorymotor innervation is from the facial nerve
Via chorda tympani– submandibular ganglion

41
Q

What’s the features of the sublingual gland

A

It’s the smallest and mist deeply situated
Each is almond shape lying btw the mandible on the floor of the mouth

42
Q

Arterial supply to the sublingual gland
And innervation

A

Sublingual and submental artery
Same as submandibular

43
Q

There are about how many minor salivary gland and how are they distributed

A

450
Mucosa of the lip
Cheeks
Palate
Floor of the mouth
Oropharynx
Larynx
Trachea

44
Q

The parotid gland, the largest, receives
parasympathetic innervation from ____ via

A

CN IX via otic ganglion

45
Q

• The
submandibular and sublingual glands receive parasympathetic innervation
from_____ via
. Their ducts open into the oral cavity under the
tongue.

A

CN VII by way of the chorda tympani nerve, lingual nerve, and
submandibular ganglion

46
Q

Calculus formation is common at what salivary gland

A

Submandibular

47
Q

Frey’s syndrome is as a result of?

A

Damage to auriculotemporal and great aricular nerve

48
Q

There are how many deciduous teeths
And their classification

A

20
4 canine
4 incisors
2 molar

49
Q

The deciduous teeth begin to appear at what age and finish what age

A

6 months
2 Y
Lower appear b4 upper

50
Q

There are how many permanent teeths
And their classification

A

32
6 molar
4 premolar
4 incisors
2 canine

51
Q

The permanent teeth begin to appear at what age and finish what age

A

6 Y
Last teeth is the 3 molar @ 17-30

52
Q

The vestibular surface (labial or
buccal) of each tooth is directed_____, and the lingual surface is directed
________

A

outwardly
inwardly

53
Q

The root of the teeth is fixed to the socket by _____

A

Periodontium

54
Q

____ part of the tooth contains the blood vessels and connective T and nerves

A

Pulp cavity

55
Q

What transmits BV and nerves to and fro from the pulp cavity via

A

Pulp canal/root canal
Via apical foramen

56
Q

The tooth socket are located in the _____ spaces of the maxilla and mandible

A

Alveolar spaces

57
Q

Apical foramen– Root canal– Pulp cavity
Coverings, Cement– Dentine– Enamel

A
58
Q

What’s the blood supply to the teeth
Veins and lymphatic drainage

A

The Sup. Branch of Maxillary Artery supplies Maxillary Teeth
The Inf. Branch of Maxillary artery supplies Mandibular Teeth

Alveolar Vein has the same name

Lymph of the tooth and gum drains into Submandibular Lymph Node

59
Q

Read up on innervation

A

H&N (8 decks)

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