Mandible - Mouth cavity -Palates-Tongue-lips

Question 1

Mention the types of oral mucosa

Answer 1

Masticatory , linning , specialized (taste buds )

Question 2

which surfaces does the masticatory mucosa lines

Answer 2

hard palate , gums , dorsal surface

Question 3

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

Answer 3

labial salivary glands

Question 4

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

Answer 4

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

Question 5

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

Answer 5

dorsal - masticatory - keratinized - firmly attached

ventral - lining- non keratinized - loosely attached

Question 6

whats the main bulk of the lips ?

Answer 6

orbicularis oris muscle

Question 7

whats the main bulk of the tongue ?

Answer 7

striated muscle fibers

Question 8

Define the lingual papillae and its epithelium

Answer 8

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

Question 9

function of the lingual papillae

Answer 9

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

Question 10

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

Answer 10

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

Question 11

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

Answer 11

Fungiform

Question 12

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

Answer 12

circumvallate

Question 13

where does the ducts of vons ebners salivary glad open ?

Answer 13

at the bottom of the circumvallate

Question 14

what type of secretion does vons ebners gland secrete ?

Answer 14

Serous secretion

Question 15

how does the coated tongue forms ?

Answer 15

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

Question 16

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

Answer 16

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

Question 17

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

Answer 17

long

Question 18

site of taste buds

Answer 18

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

Question 19

Types of cells in taste buds

Answer 19

supporting , neuroepithelial , basal cells

Question 20

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

Answer 20

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

Question 21

mention the location of the basal tastebud cell and its function

Answer 21

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

Question 22

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

Answer 22

Through an interval behind the last moral tooth

Question 23

mouth cavity is bounded posteriorly by ?

Answer 23

isthmus of faeces ( which connects it with the pharynx )

Question 24

floor of the mouth cavity ?

Answer 24

mylohyoid muscle

Question 25

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

Answer 25

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

Question 26

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

Answer 26

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

Question 27

Nerve supply of the posterior belly

Answer 27

facial nerve

Question 28

Action of the digastric muscle

Answer 28

depression of the mandible or elevation of the hyoid bone

Question 29

origin and insertion of the mylohyoid muscle

Answer 29

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

Question 30

Origin and insertion of the geniohyoid muscle

Answer 30

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

Question 31

Nerve supply of the mylohyoid muscle

Answer 31

inferior alveolar branch of the mandibular nerve

Question 32

nerve supply of the geniohyoid muscle

Answer 32

C1 component of the hypoglosses nerve

Question 33

general action of the mandibular muscles

Answer 33

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

Question 34

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

Answer 34

hard palate

Question 35

contents of the soft palate

Answer 35

muscles , palatine aponeurosis , nerves , vessels

Question 36

which tendon of muscle forms the palatine aponurosis ?

Answer 36

tenser palati muscle

Question 37

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

Answer 37

Palatine aponeurosis

Question 38

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

Answer 38

Soft palate

Question 39

Nerve supply and action of the tensor palati muscle

Answer 39

trunk of the mandibular nerve , tenses / tightens the palate

Question 40

Nerve supply and action of the levator palati muscle

Answer 40

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

Question 41

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

Answer 41

levator and tensor palatine muscles

Question 42

Action of the Uvula

Answer 42

retract and elevate uvula

Question 43

nerve supply of the soft palate muscles

Answer 43

cranial part of accessory nerve except tensor palati muscle

Question 44

mention sensory nerve supply of the hard palate

Answer 44

greater palatine and nasopalatine nerve

Question 45

mention sensory nerve supply of the soft palate

Answer 45

Lesser palatine and glossopharyngeal nerve

Question 46

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

Answer 46

through lesser palatine nerve via sphenopalatine ganglion

Question 47

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

Answer 47

Maxillary artery

Question 48

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

Answer 48

Facial artery

Question 49

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

Answer 49

acsending pharengeal artery

Question 50

Mention the venous drainage of the palates

Answer 50

pterygoid and pharyngeal plexus of veins

Question 51

lymphatic draingae of the soft palate

Answer 51

Deep cervical and retropharengeal lymph nodes

Question 52

lymphatic drainage of the hard palate

Answer 52

submandibular lymph nodes

Question 53

mention lymphatic drainage of the tip of the tongue

Answer 53

submental nodes

Question 54

mention lymphatic drainage of the sides of the tongue

Answer 54

submandibular lymphnodes

Question 55

mention lymphatic drainage of the centre of the tongue

Answer 55

deep cervical lymph

Question 56

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

Answer 56

deep cervical

Question 57

mention the venous drainage of the tongue and its origin

Answer 57

lingual vein draining into internal jugular vein

Question 58

Mention blood supply of the tongue

Answer 58

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

Question 59

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

Answer 59

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

Question 60

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

Answer 60

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

Question 61

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

Answer 61

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

Question 62

Numerate the muscles of the tongue and their nerve supply

Answer 62

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

Question 63

whats is the lateral structure to the frenulum of the tongue

Answer 63

deep lingual vein

Question 64

what structure is lateral to the deep lingual vein

Answer 64

fimbriated fold

Question 65

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

Answer 65

foramen caecum

Question 66

function of the intrinsic or striated muscle fibres of the tongue

Answer 66

narrowing-transverse shortning-longitudnal thinning-vertical

Question 67

action of the styloglossus muscle

Answer 67

it draws the tongue upwards and backwards

Question 68

action of the genioglossus muscle

Answer 68

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

Question 69

origin and insertion of the genioglossus muscle

Answer 69

superior genial tubercle of the tongue | insertion: whole body of the tongue

Question 70

action of the hyoglossus muscle

Answer 70

depression of the tongue