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GIT-Gastrointestinal tract > Mandible - Mouth cavity -Palates-Tongue-lips > Flashcards

Mandible - Mouth cavity -Palates-Tongue-lips Flashcards

includes general innervation of the GT

1
Q

Mention the types of oral mucosa

A

Masticatory , linning , specialized (taste buds )

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2
Q

which surfaces does the masticatory mucosa lines

A

hard palate , gums , dorsal surface

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3
Q

what type of salivary glands present in the lamina propria of the lip

A

labial salivary glands

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4
Q

mention the epithelium of the mucus surface of the lip as well as the red margin

A

thin keratinized stratified squamous epithelium –>red margin
non keratinized —> mucous

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5
Q

mention the mucosa of the dorsal and ventral surface of the tongue

A

dorsal - masticatory - keratinized - firmly attached

ventral - lining- non keratinized - loosely attached

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6
Q

whats the main bulk of the lips ?

A

orbicularis oris muscle

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7
Q

whats the main bulk of the tongue ?

A

striated muscle fibers

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8
Q

Define the lingual papillae and its epithelium

A

its the anterior 2/3 of the dorsal surface of the tongue- epithelium is keratinized stratified

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9
Q

function of the lingual papillae

A

it increases the mucus surface which comes in contact with the food

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10
Q

compare between the filiform & fungiform lingual papillae in number , distribution , taste buds

A

filiform: numerous , arranged in rows parallel to the gustatory line , absent taste buds
fungiform :Few , scattered between the filiform papillae but most numerous at the tip , few taste buds and apical

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11
Q

which lingual papillae has a vascular connective tissue that is seen as red dots

A

Fungiform

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12
Q

Mention the Largest lingual papillae that could be seen by the naked eyes

A

circumvallate

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13
Q

where does the ducts of vons ebners salivary glad open ?

A

at the bottom of the circumvallate

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14
Q

what type of secretion does vons ebners gland secrete ?

A

Serous secretion

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15
Q

how does the coated tongue forms ?

A

the keratinized epithelium of the filiform papillae is continuously shed in saliva . During gastro disturbances and fevers this shed is delayed causing accumulation with the bacteria

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16
Q

Mention the function of the vons ebners secretion with the circumvallate papillae

A
  1. facilitate perception of food
  2. flow of secretion
  3. lypaze enzyme
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17
Q

type of secondary papillae in folliate papillae ? ( short or long- absent )

A

long

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18
Q

site of taste buds

A

embedded in the epithelium of lingual papillae and limited is the epi of the palate and epiglottis

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19
Q

Types of cells in taste buds

A

supporting , neuroepithelial , basal cells

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20
Q

mention the name of the taste cells or taste receptive cells ? and what facilitates its function

A

Neuroepithelial cells as it has long apical microvilli ( gustatory hair ) that open to the surface of the epithelium through gustatory openings

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21
Q

mention the location of the basal tastebud cell and its function

A

between the bases of the taste buds cells and it differentiate to replace the neuroepithelial cells every 10 days

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22
Q

during the closure of the jaw , the vestibule is connected with the mouth cavity through ?

A

Through an interval behind the last moral tooth

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23
Q

mouth cavity is bounded posteriorly by ?

A

isthmus of faeces ( which connects it with the pharynx )

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24
Q

floor of the mouth cavity ?

A

mylohyoid muscle

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25
Q

mention the origin & insertion of the posterior belly of the digastric muscle ?

A

from the mastoid notch and inserted in the intermediate tendon which is inserted into the greater horn of the hyoid bone

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26
Q

origin of the anterior belly of the digastric muscle and its nerve supply

A

digastric fossa

NS: nerve to the mylohoid which is the inferior alveolar branch of the mandibular nerve

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27
Q

Nerve supply of the posterior belly

A

facial nerve

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28
Q

Action of the digastric muscle

A

depression of the mandible or elevation of the hyoid bone

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29
Q

origin and insertion of the mylohyoid muscle

A

o: mylohoid line of the mandible
I: posterior fibers inserted in the hyoid bone
anterior fibers inserted in the fibrous Raphe in the midline

30
Q

Origin and insertion of the geniohyoid muscle

A

O: inferior genial tubercle of the mandible
I: hyoid bone

31
Q

Nerve supply of the mylohyoid muscle

A

inferior alveolar branch of the mandibular nerve

32
Q

nerve supply of the geniohyoid muscle

A

C1 component of the hypoglosses nerve

33
Q

general action of the mandibular muscles

A

depression of the mandible or elevation of the hyoid bone during swallowing

34
Q

which palate forms the floor of the nasal cavity and is surrounded by the alveolar arch

A

hard palate

35
Q

contents of the soft palate

A

muscles , palatine aponeurosis , nerves , vessels

36
Q

which tendon of muscle forms the palatine aponurosis ?

A

tenser palati muscle

37
Q

fibrous sheet attached to the posterior border of the hard palate and gives attachmtment to all soft palate muscles

A

Palatine aponeurosis

38
Q

It ends posteriorly with uvula and covers the lateral sides of the pharynx

A

Soft palate

39
Q

Nerve supply and action of the tensor palati muscle

A

trunk of the mandibular nerve , tenses / tightens the palate

40
Q

Nerve supply and action of the levator palati muscle

A

Cranial part of the accessory nerve of the pharengeal plexus
A: elevation of the palate

41
Q

which two muscles open the auditory tule to equalize the pressure between the middle ear and the nasopharynx

A

levator and tensor palatine muscles

42
Q

Action of the Uvula

A

retract and elevate uvula

43
Q

nerve supply of the soft palate muscles

A

cranial part of accessory nerve except tensor palati muscle

44
Q

mention sensory nerve supply of the hard palate

A

greater palatine and nasopalatine nerve

45
Q

mention sensory nerve supply of the soft palate

A

Lesser palatine and glossopharyngeal nerve

46
Q

mention Parasympathetic supply of the palates ( secretion & taste sensation)

A

through lesser palatine nerve via sphenopalatine ganglion

47
Q

The blood supply of the palates through the greater palatine artery is a branch from

A

Maxillary artery

48
Q

The blood supply of the palates through the ascending palatine artery is a branch from

A

Facial artery

49
Q

The blood supply of the palates through the palatine branch of which artery

A

acsending pharengeal artery

50
Q

Mention the venous drainage of the palates

A

pterygoid and pharyngeal plexus of veins

51
Q

lymphatic draingae of the soft palate

A

Deep cervical and retropharengeal lymph nodes

52
Q

lymphatic drainage of the hard palate

A

submandibular lymph nodes

53
Q

mention lymphatic drainage of the tip of the tongue

A

submental nodes

54
Q

mention lymphatic drainage of the sides of the tongue

A

submandibular lymphnodes

55
Q

mention lymphatic drainage of the centre of the tongue

A

deep cervical lymph

56
Q

mention lymphatic drainage of the posterior 1/3 of the tongue

A

deep cervical

57
Q

mention the venous drainage of the tongue and its origin

A

lingual vein draining into internal jugular vein

58
Q

Mention blood supply of the tongue

A

lingual artery , ascending pharyngeal artery , Tonsillar branch of facial artery

59
Q

nerve supply of the anterior 2/3 of the tongue ? ( general sensation , taste , motor )

A

general sens: through the lingual nerve
taste sense: chorda tympani
motor : hypoglossal nerve

60
Q

nerve supply of the posterior 1/3 of the tongue ? ( general sensation , taste , motor )

A

general sens: glossopharyngeal nerve
taste sense:
motor : hypoglossal nerve

61
Q

nerve supply of the most posterior part of the tongue ? ( general sensation , taste , motor )

A

general and taste sense: internal laryngeal branch of the vagus
motor : hypo glossal nerve

62
Q

Numerate the muscles of the tongue and their nerve supply

A

styloglossus muscle , palatoglossus muscle , genioglossus muscle , hyglossus muscle
NS: hypoglossal nerve

63
Q

whats is the lateral structure to the frenulum of the tongue

A

deep lingual vein

64
Q

what structure is lateral to the deep lingual vein

A

fimbriated fold

65
Q

apex of the sulcus terminalis that separates the posterior from the anterior of the dorsum of the tongue

A

foramen caecum

66
Q

function of the intrinsic or striated muscle fibres of the tongue

A

narrowing-transverse
shortning-longitudnal
thinning-vertical

67
Q

action of the styloglossus muscle

A

it draws the tongue upwards and backwards

68
Q

action of the genioglossus muscle

A

with the opposite muscle ( left and right ) it protrudes the tongue and also depresses its median part

69
Q

origin and insertion of the genioglossus muscle

A

superior genial tubercle of the tongue

insertion: whole body of the tongue

70
Q

action of the hyoglossus muscle

A

depression of the tongue

GIT-Gastrointestinal tract (9 decks)

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