skull Flashcards

(45 cards)

1
Q

the skull is the complex region of which section of skeleton

A

axial

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2
Q

how many bones is the skull comprised of

A

22 plus the hyoid bone

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3
Q

what is the function of the skull

A

support and protection

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4
Q

what 2 distinct regions can the insertion of muscles be divided into

A

neurocranium and viscerocranium

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5
Q

within the nerurocranium how many bones are there

A

8

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6
Q

within the viscerocranium how many bones are there

A

15

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7
Q

what are reinforced pathways of the skull called

A

buttresses

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8
Q

which section of the skull is reinforced to transmit the forces associated with mastiction

A

viscerocranium

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9
Q

forces generated by the lower teeth are contained within what bone

A

mandible

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10
Q

forces generated by the upper teeth are generated by what bone

A

maxilla

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11
Q

forces are dispersed through three specific reinforced craniofacial buttresses, what are they

A

frontal
zygomatic
pterygoid

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12
Q

what is described as mucous lined, air filled cavities within the bone of the skull

A

air sinuses

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13
Q

air sinuses are connected to where

A

the lateral walls of the nasal cavity

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14
Q

dentition terminology

  • mesial
  • distal
  • labial
  • buccal
  • lingual
A

-towards midline
-away from midline
-towards lips
-towards cheeks
towards tongue

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15
Q

what is the medical name for baby teeth

A

deciduous dentition

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16
Q

how are deciduous teeth aligned in the mouth

A

4molars-2canines-8incisors-2canines-4molars

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17
Q

what is the medical name for adult teeth

A

permanent dentition

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18
Q

how are permanent teeth aligned in the mouth

A

6molars-4premolars-2canines-8incisiors-2canines-4premolars-6molars

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19
Q

what nerve are muscles of facial expression controlled by

20
Q

how many muscles make up the muscles of mastication

21
Q

what three muscles elevate the mandible (muscles of mastication)

A

masseter
temporalis
medial pterygoid

22
Q

which muscles depresses the mandible

A

lateral pterygoid

23
Q

what nerve is responsible for innervating the muscles of mastication

24
Q

which tongue muscle is responsible for changing the shape of the tongue

A

istrinsic muscles

25
in the tongue which muscles are responsible for changing the position
extrinsic muscles
26
which nerve is responsible for innervating the tongue muscles
hypoglossal nerve
27
bones of the neurocranium are primarily supplied by what artery
middle meningeal
28
the middle meningeal is branch from what artery
external carotid
29
the middle meningeal enters the skull through where
the foramen spinosum
30
what branches off from the middle meningeal
anterior and posterior
31
the foramen spinosum forms grooves on the internal surface of where
neurocranium
32
how many layers is the scalp made up of
5
33
name the 5 layers of the scalp
``` S kin C onnective tissue A poneurosis L oose connective tissue P ericardium ```
34
where is the main arterial supply for the scalp
arteries in the neck and intercranial arteries
35
where do cranial nerves traverse through
various cranial foraminae and canals
36
what is the name of the bony bit where the eyes sit
the orbit
37
how many bones is the orbit comprised of
7 cranial bones
38
what is movement of the eye controlled by
six extrinsic muscles
39
what are the three cranial nerves involved in the movement of the eye
CN, III, IV, VI
40
what three regions is the ear comprised by
external ear middle ear inner ear
41
what does the external ear region include
auricle and external acoustic meatus
42
what does the middle ear region include
ear ossicles
43
what does the inner ear include
cochlea and semi-circular canals
44
where are the middle and inner ear contained
within temporal
45
what are the three ear ossicles
malleus incus stapes