TONGUE/ FLOOR

Question 1

the floor of the oral cavity is formed by

Answer 1

1. mylohyoid muscles
2. geniohyoid muscles
3. tongue
4. salivary glands with their ducts present on the floor of the oral cavity proper

Question 2

mylohyoid muscle

Answer 2

a muscular diaphragm composed of the paired mylohyoid muscles

Question 3

geniohyoid muscle

Answer 3

two cord like above the diaphragm

Question 4

tongue

Answer 4

it is superior to the geniohyoid

Question 5

what is the tongue

Answer 5

The tongue is a muscular structure that forms part of the floor of
the oral cavity and part of the anterior wall of the oropharynx

Question 6

Its anterior part is in the oral cavity and is somewhat

Answer 6

triangular in shape with a blunt apex of the tongue

Question 7

the apex is directed anteriorly and sits

Answer 7

immediately behind the incisor teeth

Question 8

the root of the tongue is attached to the mandible and the hyoid bone(fixed)

Answer 8

forms the pharyngeal surface that becomes oriented more in the vertical plane= posterior 1/3 of tongue

Question 9

the body of the tongue is the mobile anterior part of the tongue that forms

Answer 9

forms oral surface of the tongue

the tongue is oriented in the horizontal plane= anterior 2/3 of tongue

Question 10

the oral and the pharngeal surfaces are separated by

Answer 10

a v-shaped terminal sulcus of the tongue

Question 11

this terminal sulcus forms inferior margin of the

Answer 11

oropharyngeal isthmus between the oral and pharyngeal cavities

Question 12

at the apex of the v-shaped sulcus is a

Answer 12

small depression( the foramen of the tongue) which marks the site in the embryo where the epithelium invaginated to form the thyroid gland

Question 13

function of the tongue

Answer 13

1. formation of bolus and deglutition
2. speech
3. taste

Question 14

surfaces of the tongue

Answer 14

1. superior/oral

2. posterior/pharyngeal

Question 15

the superiror surface of the oral part of the tongue is covered by a thin firmly attached mucous membrane with hundreds of papillae

Answer 15

1. filiform= cone shaped, have taste buds
2. fungiform= round and concentrated along margins of the tongue
3. vallate= largest, blunt ended cylindrical
4. foliate= linear folds of mucosa

Question 16

the papillae the

Answer 16

area of contact between the surface of the tongue and the contents of the oral cavity

Question 17

inferior surface of the tongue

Answer 17

The under surface of the oral part of the tongue lacks papillae, but it does have a number of linear mucosal folds

Question 18

anterior surface of the tongue= a single median fold is

Answer 18

A single median fold (the frenulum of the tongue) is continuous with the mucosa covering the floor of
the oral cavity, and overlies the lower margin of a midline sagittal septum, which internally separates
the right and left sides of the tongue

Question 19

pharyngeal surface

Answer 19

The mucosa covering the pharyngeal surface of the tongue is irregular in contour because of the many
small nodules of lymphoid tissue in the submucosa.

o These nodules are collectively the lingual tonsil.

o There are no papillae on the pharyngeal surface.

Question 20

the tongue is essentially a mass of muscles covered

Answer 20

by mucosa

Question 21

The muscles of the tongue do not act in

Answer 21

in isolation, and some muscles perform multiple actions

Question 22

extrinsic muscles

Answer 22

alter the position of the tongue

originate outside the tongue and attach to it

a. genioglossus
b. hyoglossus
c. styloglossus
d. palatoglossus

Question 23

intrinsic muscles

Answer 23

alter the shape of the tongue

they have thier attachement entirely within the tongue and are not attached to a bone

a. superior and inferiror longitudinal
b. transverse
c. vertical muscles

Question 24

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

Answer 24

y a median fibrous
lingual septum, which merges posteriorly with the lingual aponeurosis, this means that all muscles of the tongue are paired

Question 25

except of the platoglossus which is innervated by vagus nerve cnx all muscles are innervated by the

Answer 25

hypoglossal nerve CNXII