02. SKULL (HARC) Flashcards

1
Q

FOREHEAD part of SKULL

A

FRONTAL

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2
Q

CHEEK BONE name in skull

A

ZYGOMATIC

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3
Q

UPPER JAW/TEETH (superior):

A

MAXILLA

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4
Q

LOWER JAW/TEETH (inferior:)

A

MANDIBLE

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5
Q

LOWER JAW/TEETH (inferior:)

A

MANDIBLE
(moveable)

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6
Q

SKULL BONES in the ORBIT (EYE SOCKET) (3)

A

SPHENOID (posterior, large)
LACRIMAL (small)
ETHMOID (roof of nose, goes through to other side, found in nasal septum)

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7
Q

‘at the side’ SKULL BONE (top)

A

PARIETAL

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8
Q

BASE SKULL BONE (bottom)

A

OCCIPITAL

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9
Q

LATERAL and INFERIOR SKULL BONE (‘time bone’)

A

TEMPORAL

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10
Q

what is the purpose of the SUTURES in the skull

A

PREVENT MOVEMENT

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11
Q

3 SUTURES in the skull

A

CORONAL SUTURE
SAGITTAL SUTURE
LAMBDOID SUTURE

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12
Q

where is the CORONAL SUTURE

A

between the FRONTAL and 2 PARIETAL

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13
Q

where is the SAGITTAL SUTURE

A

between the 2 PARIETAL

‘straight’

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14
Q

where is the LAMBDOID SUTURE

A

between the PARIETAL and OCCIPITAL

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15
Q

what is the name of the area in the SKULL where the CORONAL SUTURE and SAGITTAL SUTURE MEET

A

BREGMA

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16
Q

what is the name of the area in the SKULL where the SAGITTAL SUTURE and the LAMBDOID SUTURE MEET

A

LAMBDA

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17
Q

what can you often find in the skull

A

SUTURAL BONE (WORMION)

varied
different numbers and sizes in different people

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18
Q

what are the names of the 2 SKULL BONES in the NASAL SEPTUM
superior:
inferior:

A

superior: ETHMOID BONE

inferior: VOMER BONE

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19
Q

the ROOF of the MOUTH is majority MAXILLARY BONE. but POSTERIORLY it has which bone

A

PALATINE BONE

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20
Q

what is the names of the areas which house different parts of the BRAIN

A

CRANIAL FOSSAE

ANTERIOR CRANIAL FOSSA (frontal lobe)
MIDDLE CRANIAL FOSSA (temporal lobe)
POSTERIOR CRANIAL FOSSA (cerebellum)

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21
Q

from a view from underneath and transverse, what would you be able to see in the skull

A

FORAMEN (holes)

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22
Q

name the FORAMEN in the SKULL and what go through them

A

FORAMEN MAGNUM (major)
- Spinal Cord (up through and becomes brain stem)
- Vertebral Arteries

JUGULAR FORAMEN
- Internal Jugular Vein
- Cranial Nerves 9,10,11

CAROTID CANAL
- Internal Carotid Artery

FORAMEN OVALE
- Mandibular Nerve (branch of trigeminal)

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23
Q

what goes through the FORAMEN MAGNUM of the SKULL (2)

A
  • SPINAL CORD
  • VERTEBRAL ARTERIES
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24
Q

what goes through the JUGULAR FORAMEN of the SKULL (2)

A

INTERANAL JUGULAR VEIN

CRANIAL NERVES 9,10,11

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25
Q

what goes through the CAROTID CANAL of the SKULL

A

INTERNAL CAROTID ARTERY

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26
Q

what goes through the FORAMEN OVALE of the SKULL

A

MANDIBULAR NERVE
(branches from trigeminal nerve)

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27
Q

MUSCLES of FACIAL EXPRESSION
- where are they
- what do they do
- supplied by which cranial nerve

A

UNIQUE to the human body
-lie UNDERNEATH the SKIN of the face and INSERT DIRECTLY INTO SKIN

  • Responsible for MOVING the SKIN to provide facial expression,
  • also act as SPHINCTERS AROUND the EYES and MOUTH- OPEN /CLOSE the EYES and MOUTH
  • Supplied by cranial nerve VII (7) – The FACIAL NERVE
28
Q

MUSCLES of MASTICATION
role? supplied by which cranial nerve?

A

NORMAL SKELETAL MUSCLE

  • MOVING the MANDIBULAR at the TEMPOROMANDIBULAR JOINT (chewing)
  • Supplied by cranial nerve V (5) – the TRIGEMINAL NERVE
29
Q

MUSCLES of FACIAL EXPRESSION (sheets)
muscle in SCALP/from frontal bone to occipital bone?

A

OCCIPTOFRONATLIS

  • FRONTAL BELLY of OCCIPITOFRONTALIS
  • OCCIPITAL BELLY of OCCIPITOFRONTALIS
30
Q

MUSCLES of FACIAL EXPRESSION (sheets)
surrounding the EYE and helps CLOSE eye

A

ORBICULARIS OCULI

31
Q

MUSCLES of FACIAL EXPRESSION (sheets)
around MOUTH

A

ORBICULARIS ORIS

32
Q

MUSCLES of FACIAL EXPRESSION (sheets)
in NECK

A

PLATYSMA

33
Q

the FACIAL NERVE is CRANIAL NERVE number…

A

7

34
Q

the FACIAL NERVE enters which FORAMEN, travels and come out of which other FORMAEN

A

enters INTERNAL ACOUSTIC MEATUS

comes out from STYLOMASTOID FORAMEN (small)

35
Q

the STYLOMASTOID FORAMEN (facial nerve comes out from) is in between and gets its name from.. (2)

A

MASTOID PROCESS (bump on skull behind ear)
STYLOID PROCESS (spiky)

36
Q

the FACIAL NERVE splits into how many BRANCES

A

5

37
Q

what GLAND the FACIAL NERVE TRAVEL THROUGH (whilst branching) on its way to innervating muscles for facial expression

A

PAROTID GLAND
(salivary)

38
Q

name the 5 BRANCHES that the FACIAL NERVE SPLITS into (order from top to bottom)

A
  • TEMPORAL BRANCH
  • ZYGOMATIC BRANCH
  • BUCCAL BRANCH
  • MARGINAL MANDIBULAR BRANCH
  • CERVICAL BRANCH
39
Q

what are the 4 MUSCLES of MASTICATION
(big, powerful muscles that help you chew)

A
  • MASSETER
  • TEMPORALIS (side of skull)
  • LATERAL PTERYGOID
  • MEDIAL PTERYGOID
40
Q

MUSCLES OF MASTICATION
what is MASSETER for

A

ELEVATION (keep up against gravity)
& PROTRUSION

of mandible

41
Q

MUSCLES OF MASTICATION
what is the TEMPORALIS for

A

ELEVATION
& RETRACTION

of mandible

42
Q

MUSCLES OF MASTICATION
what are the MEDIAL and LATERAL PTERYGOIDS for

A

ELEVATION
& PROTRUSION

43
Q

the MANDIBULAR NERVE is a BRANCH of which CRANIAL NERVE

A

TRIGEMINAL NERVE

44
Q

how many BRANCHES are there of the TRIGEMINAL NERVE and what are they

A

3

V1- OPTHALAMIC NERVE
V2- MAXILLARY NERVE
V3- MANDIBULAR NERVE

45
Q

2 FUNCTIONS of TRIGEMINAL NERVE

A
  • SENSORY to the FACE
    (trigeminal nerve is sensory to the face and scalp as far back as the vertex)
  • MOTOR to the MUSCLES OF MASTICATION
46
Q

the TRIGEMINAL NERVE COMES OUT of which FORMANE (as MANDIBULAR NERVE) to innervate the muscles of mastication

A

FORAMEN OVALE

47
Q

each PHARYNGEAL ARCH (in embryology) has its own: (4)

A
  • CARTILAGE skeleton
  • MUSCULAR component
  • SENSORY NERVE supply
  • MOTOR NERVE supple
48
Q

key rule:
when a MUSCLE MOVES/MIGRATES it brings..

A

BRINGS its OWN NERVE SUPPLY WITH IT

49
Q

which PHARYNGEAL ARCH are MUSCLES of MASTICATION derived from?
and are therefore INNERVATED by which cranial nerve?

A

1ST PHARYNGEAL ARCH

innervated by TRIGEMINAL NERVE (5)

50
Q

which PHARYNGEAL ARCH are MUSCLES of FACIAL EXPRESSION derived from?
and are therefore INNERVATED by which cranial nerve?

A

2ND PHARYNGEAL ARCH

innervated by FACIAL NERVE (7)

51
Q

the TEMPOROMANDIBULAR JOINT is which type of joint

A

SYNOVIAL JOINT

52
Q

what does a SYNOVIAL JOINT consist of

A

JOINT CAPSULE
SYNOVIAL MEMBRANE - secretes FLUID
JOINT CAVITY
ARTICULAR CARTILAGE (hyaline)
LIGAMENT

53
Q

what is the name of the area in the TEMPORAL BONE that ARTICULATES (forms a joint with) the ZYGOMATIC BONE

A

ZYGOMATIC PROCESS OF THE TEMPORAL BONE

54
Q

what does the HEAD of the MANDIBLE SLOT INTO (HELD IN)

A

MANDIBULAR FOSSA
of the ZYGOMATIC PROCESS (of the temporal bone)

55
Q

what is the name of the 3 LIGAMENTS that help SECURE/STABILISE the TEMPOROMANDIBULAR JOINT

A
  • LATERAL TEMPOROMANDIBULAR LIGAMENT
  • SPHENOMANDIBULAR LIGAMENT
  • STYLOMANDIBULAR LIGAMENT
56
Q

what is the role of the LATERAL TEMPOROMANDIBULAR LIGAMEN of the temporomandibular joint

A

PREVENTS POSTERIOR DISLOCATION of the MANDIBLE (head)

cant move back/posteriorly

57
Q

what is the role of the SPHENOMANDIBULAR LIGAMENT and the STYLOMANDIBULAR LIGAMENT in the temporomandibular joint

A

help KEEP the HEAD of the MANDIBLE IN the MANDIBULAR FOSSA - PREVENTS FALLING OUT

  • especially when OPENING JAW

(rotates in the fossa)

58
Q

MOVEMENTS of the MANDIBLE:
DEPRESSION:
ELEVATION:
PROTRUSION:
RETRACTION:
ROTATION:

A

DEPRESSION:
causes the MOUTH to OPEN

ELEVATION:
causes the MOUTH to CLOSE

PROTRUSION:
causes the LOWER TEETH to MOVE FORWARD - lie in FRONT of UPPER TEETH

RETRACTION:
LOWER TEETH MOVE BACK - lie in LINE/BEHIND UPPER TEETH
/ MANDIBULAR HEAD is PULLED BACK INTO MANDIBULAR FOSSA

ROTATION:
causes LATERAL CHEWING MOVEMENTS

59
Q

what is the EXTRA FEATURE of the SYNOVIAL JOINT that enables all these MOVEMENTS in the TEMPOROMANDIBULAR JOINT

and what does it do / form

A

ARTICULAR DISC

SEPARATES the JOINT INTO 2

get UPPER JOINT CAVITY and LOWER JOINT CAVITY

60
Q

the UPPER JOINT CAVITY in the TEMPOROMANDIBULAR JOINT allows which movements

A

PROTRUSION & RETRACTION

61
Q

the LOWER JOINT CAVITY in the TEMPOROMANDIBULAR JOINT allows which movements

A

HINGE & ROTATION

62
Q

What is between the head of the mandible and the mandibular fossa

A

ARTICULAR DISC
( JOINT)

63
Q

what is the area BELOW / TO THE SIDE of the mandibular FOSSA

A

ARTICULAR TUBERCLE

64
Q

during PROTRUSTION how does the HEAD OF THE MANDIBLE MOVE

A

MOVES OUT of the FOSSA
onto the ARTICULAR TUBERCLE

65
Q

when the mouth is WIDE OPEN what are the 2 MANDIBLE MOVEMENTS and how does the HEAD of the MANDIBLE MOVE

A

PROTUSION & DEPRESSION

HEAD of MANDIBLE MOVES OUT of FOSSA and onto ARTICULAR TUBERCLE
- gives mandible space to ROTATE BACKWARDS