week 4

Question 1

oral cavity consists of (8)

Answer 1

lips 
cheeks
palate
teeth
gingivae
front 2/3 of tounge 
retromolar trigone
floor of ,mouth

Question 2

oropharynx consists of

Answer 2

palatine tonsils
tounge base
posterior pharangeal walls

Question 3

palatal rugae helps with

Answer 3

speaking

Question 4

horseshoe shaped bone

joins floor of mouth and tounge with pharynx and larynx

Answer 4

hyoid bone

Question 5

articular disc (fibrocartilage) and mandibular condyle are pulled forward and down by the x

Answer 5

lateral pterygoid muscle

Question 6

4 muscles of mastication
3/4 aid in closing mouth
1/4 aid in opening mouth

Answer 6

maesseter
temporalis
medial pterygoid

lateral pyerygoid opens the mouth

Question 7

all 4 muscles of mastication are innervated by

Answer 7

cranial nerve v which is trigeminal nerve

Question 8

masseter muscle orgin and insertion

Answer 8

orgin: zygomatic arch
insertion: angle and ramus of mandible laterally

Question 9

temporalis muscle orgin and insertion

Answer 9

origin: temporal fossa
insertion: coronoid process and anterior border of mandible ramus

Question 10

medial pterygoid muscle orgin and insertion

Answer 10

origin: portions of spenoid,maxillary and palatine bones
insertion: angle and ramus of mandible medially

Question 11

lateral pterygoid

Answer 11

origin: spehnoid bone
insertion: TMJ and mandibular condyle

Question 12

4 extrinsic tounge muscles
3/4 innervated by hypoglossus nerve CN XII
1/4 innervated by vagus nerve CN X

Answer 12

genioglossus
hyoglossus
styloglossus

palatoglossus

Question 13

genioglossus

Answer 13

aids in depresses and protracts and retracts

Question 14

hyoglossus

Answer 14

depresses and retracts

Question 15

styloglossus

Answer 15

retracts and pulls tounge back and upward

Question 16

palatoglosus

Answer 16

depresses soft palate and elevates tounge

and pulls backward

Question 17

all muscles of facial expression are innervated by

Answer 17

CN VII aka Facial nerve

Question 18

facial nerve branches (5)

Answer 18

temporal branch
zygomatic branch
buccal branch
mandibular branch
cervical branch

Question 19

cranial nerves

Answer 19

nerves that join brain/brainstem directly rather then via spinal cord

Question 20

supplies the muscles of facial expression and relays special sensation of taste from the anterior 2/3 of the tounge

Answer 20

facial nerve
CN VII (7)

Question 21

main function is transmitting sensory in the face. It also stimulates movement in the jaw muscles

overall deals with mastication and facial sensation

Answer 21

trigeminal nerve
CN V (5)

Question 22

extra cellular matrix

Answer 22

consists of proteins and ground substance and fibres

between tissue cells

Question 23

Blast cells retain the capacity for cell division, and secrete the extracellular matrix that is characteristic of a tissue.
Examples: Fibroblasts in X Chondroblasts in X
Osteoblasts in X

Answer 23

loose and dense connective tissue

cartilage

bone

Question 24

dif types of connective tissue cells (6)

Answer 24

Fibroblasts
Macrophages
Mast cells
Plasma cells 
Adipocytes
White blood cells

Question 25

Neutrophils (polymorphonuclear leucocyte)

Answer 25

first cells to gather at sites of infection

Question 26

Eosinophils

Answer 26

migrate to sites of parasitic invasion or allergic responses

Question 27

Haematoxylin and Eosin

Answer 27

most common dyes used in histology slides