Oral biology

Question 1

concerning the structure of the oral mucosa, the _ separates the epithelium from the underlying connective tissue

Answer 1

basement membrane

Question 2

within the tooth, the hyaline layer is the:

Answer 2

outer layer of dentine next to the cementum-dentine junction

Question 3

the oblique ridges are features of:

Answer 3

maxillary first and second molars

Question 4

which of the following teeth usually have two root branches that are bicurfacated in the apical third?

Answer 4

maxillary first premolar

Question 5

the prinicipal differece between bone and cementum is that the latter lacks:

Answer 5

blood and nerve supply

Question 6

psychrophilic bacteria are able to grow best at

Answer 6

temperatures below 20.C

Question 7

the initial stage of the virus ‘growth’ cycle is:

Answer 7

attachment

Question 8

which nerve is tested for its sensory function in the corneal reflex?

Answer 8

trigeminal

Question 9

what type of dentin is produced in response to external trauma and has a protective function?

Answer 9

tertiary

Question 10

what is the most mineralised tissues?

Answer 10

enamel

Question 11

FDI system for lower right first molar

Answer 11

46

Question 12

what is the area between teeth called?

Answer 12

interproximal space

Question 13

the difference between the bone and the cementum is that the later has no:

Answer 13

nerve supply

Question 14

properties of enamel and dentin

Answer 14

thermal insulator

Question 15

what is an advantage of flora?

Answer 15

make antibiotics

Question 16

what is IgA?

Answer 16

it is the main signature antibody in secretion

Question 17

antibiotics that affect RNA polymerase activity include?

Answer 17

Rifampicin

Question 18

What is the grass-like structure at the enamel dentine junction called?

Answer 18

enamel tuft

Question 19

difference in surface enamel and junctional enamel

Answer 19

surface enamel is aprismatic, harder, less porous, and has perikymata

Question 20

which nerve has its nucleus in the pons?

Answer 20

Abducens CN VI

Question 21

What is the main inorganic mineral in the tooth enamel?

Answer 21

hydroxyapatite

Question 22

what is the function of the alveolar bone?

Answer 22

protect and support teeth

Question 23

which ones of these are correct?

Answer 23

Amelogenin has a mixture of hydrophobic and hydrophillic domains

Question 24

What type of collagen is present in the periodontal ligament?

Answer 24

collagen type 1

Question 25

what is IgA?

Answer 25

signature Ig of secretions

Question 26

what is the function of plasma cells?

Answer 26

secrete antibodies

Question 27

what are the features of neutrophils?

Answer 27

2-6 lobes (multi-lobed nucleus)

Question 28

what is the pulse behind the knee called?

Answer 28

Popliteal pulse

Question 29

What do the geniohyoid, hyoglossus, and stylohyoid muscles have in common?

Answer 29

all associated with tongue

Question 30

posterior ethmoidal sinus drains ino

Answer 30

superior meatus

Question 31

what is a virus?

Answer 31

obligate intracellular parasite

Question 32

characteristics of gram negative bacteria cell envelope

Answer 32

two cell membranes

Question 33

the characteristics of T effector lymphocytes

Answer 33

short life span

Question 34

types of submandibular gland secretion

Answer 34

mixed (i.e. serous and mucous)

Question 35

which vessel is not a part of the circle of Willis?

Answer 35

subclavian

Question 36

according to definition, a cusp is:

Answer 36

a pointed projection of a crown

Question 37

what tooth has two roots that may become bifurcated?

Answer 37

Maxillary first pre-molar

Question 38

what is the mineral content of dentine?

Answer 38

70%