week 4 Flashcards

1
Q

oral cavity consists of (8)

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

oropharynx consists of

A

palatine tonsils
tounge base
posterior pharangeal walls

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3
Q

palatal rugae helps with

A

speaking

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4
Q

horseshoe shaped bone

joins floor of mouth and tounge with pharynx and larynx

A

hyoid bone

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5
Q

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

A

lateral pterygoid muscle

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6
Q

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

A

maesseter
temporalis
medial pterygoid

lateral pyerygoid opens the mouth

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7
Q

all 4 muscles of mastication are innervated by

A

cranial nerve v which is trigeminal nerve

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8
Q

masseter muscle orgin and insertion

A

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

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9
Q

temporalis muscle orgin and insertion

A

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

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10
Q

medial pterygoid muscle orgin and insertion

A

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

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11
Q

lateral pterygoid

A

origin: spehnoid bone
insertion: TMJ and mandibular condyle

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12
Q

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

A

genioglossus
hyoglossus
styloglossus

palatoglossus

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13
Q

genioglossus

A

aids in depresses and protracts and retracts

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14
Q

hyoglossus

A

depresses and retracts

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15
Q

styloglossus

A

retracts and pulls tounge back and upward

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16
Q

palatoglosus

A

depresses soft palate and elevates tounge

and pulls backward

17
Q

all muscles of facial expression are innervated by

A

CN VII aka Facial nerve

18
Q

facial nerve branches (5)

A
temporal branch
zygomatic branch
buccal branch
mandibular branch
cervical branch
19
Q

cranial nerves

A

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

20
Q

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

A
facial nerve
CN VII (7)
21
Q

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

overall deals with mastication and facial sensation

A
trigeminal nerve
CN V (5)
22
Q

extra cellular matrix

A

consists of proteins and ground substance and fibres

between tissue cells

23
Q

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

A

loose and dense connective tissue

cartilage

bone

24
Q

dif types of connective tissue cells (6)

A
Fibroblasts
Macrophages
Mast cells
Plasma cells 
Adipocytes
White blood cells
25
Neutrophils (polymorphonuclear leucocyte)
first cells to gather at sites of infection
26
Eosinophils
migrate to sites of parasitic invasion or allergic responses
27
Haematoxylin and Eosin
most common dyes used in histology slides