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Anatomy II: Exam II > Gross Brain, Meninges, and Cranial Fossa > Flashcards

Gross Brain, Meninges, and Cranial Fossa Flashcards

1
Q

frontal lobe

A

primary motor and personality area

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2
Q

parietal lobe

A

primary sensory and integration area

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3
Q

occipital lobe

A

primary visual area

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4
Q

temporal lobe

A

auditory, speech, olfactory, memory

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5
Q

cerebellum

A

fine motor coordination

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6
Q

pons

A

CN nuclei and tracts between cerebrum and berebellum

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7
Q

medulla

A

BP and respiration regulation

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8
Q

corpus callosum

A

middle brain feature

fibers connecting cerebral hemispheres

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9
Q

thalamus

A

middle brain feature

relay station for senses (not olfaction)

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10
Q

hypothalamus

A

middle brain feature

center for autonomic and endocrine function

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11
Q

pituitary gland

A

middle brain feature

homeostasis

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12
Q

mammillary bodies

A

middle brain feature

nuclei related to emotions

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13
Q

which CN cannot be seen on ventral brain surface

A

CN IV

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14
Q

CNs exiting ventral brain

A

I: axons only, not n
III: btwn post cerebral and sup cerebellar a
VII and VIII: together
inf olive separates IX and X from XII

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15
Q

ICA

A

enters carotid canal and makes 90 degree turn
ascends in foramen lacerum
enters cavernous sinus
supplies ant and middle brain

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16
Q

vertebral a

A

ascends thru trans foramina of C6 and above, 90 degree turn, enters foramen magnum, forms basilar a, supplies posterior brain

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17
Q

what structures are in parotid gland

A

retromandibular v
ECA
CN VII

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18
Q

what forms retromandibular v, and where does it drain

A

superficial temp v and maxillary v

drains to EJV and IJV

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19
Q

ECA

A

distal portion is deep in gland, runs with retromand v (a is more medial), splits posterior to mandibular neck (superficial temp a and maxillary v)

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20
Q

what is contained in carotid sheath, and where is it located

A

ICA, IJV, CN X

deep to parotid bed

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21
Q

sensory ganglion of CN VII

A 
geniculate ganglion (in temp bone)
*6 brs extend over lateral face*
22
Q

contents of temporal fossa

A

fat pad
thick fascia
temporalis
neurovasc (sup, mid, deep temp aa)

23
Q

auriculotemporal n

A

br from CN V3
travels with sup temp a and v
sensory to TMJ and lat scalp
carries parasymp fibers from CN XI to parotid

24
Q

ant and post deep temporal nn

A

br of CN V3

passes sup to lat pterygoid m, deep to temporalis

25
Q

borders of infratemporal fossa

A

lat: ramus
med: lat pterygoid plate
ant: maxilla
post: tympanic plate, mastoid and styloid processes

26
Q

contents of infratemporal fossa

A

muscles: temporalis, med and lat pterygoids
neurovasc: maxillary and brs, pterygoid plevus of vv, CN V3, PSA, chorda tympani, otic ganglion, lesser petrosal

27
Q

CN V3

A

large sensory root, small motor root
immediately gives meningeal br
later gives medial pterygoid, tensor tympani and tensor veli palatini nn

28
Q

2 divisions of Cn V3

A

ant: small, mainly motor (1 sensory br- buccal n)
post: large, mainly sensory (1 motor br- mylohyoid)

29
Q

brs of CN V3

A 
auriculotemporal (sensory)
buccal (sensory)
IA and lingual [ant to IA] (sensory)
masseteric [passes thru mand notch] and deep temp (motor)
med and lat pterygoid (motor)
30
Q

chorda tympani

A

CN VII-special sensory
joins lingual posteriorly
supplies parasymp innervation to lower 2 salivary glands
taste to ant 2/3 tongue

31
Q

TMJ

A
  • modified hinge synovial joint
  • disc moves forward, mand moves forward
  • stylomand ligament
  • sphenomand lingament
32
Q

stylomandibular ligament

A

styloid process -> post border of ramus

separates parotid and submand glands

33
Q

sphenomandibular ligament

A

spine of sphenoid bone -> lingula of mand

separated from capsule by max a and auriculotemp n

34
Q

ICA brs

A

opthalmic aa (anastamose with post communicating), terminate as mid and ant cerebral aa

35
Q

vertebrobasilar system

A
  • vert a gives ant and post spinal aa and PICA
  • basilar gives AICA
  • splits to form post cerebral
  • supplies posterior brain
36
Q

what does anterior cerebral supply

A

ant/med cerebrum

37
Q

what does middle cerebral a supply

A

ant/lat cerebrum

38
Q

what does posterior cerebral a supply

A

post/inf cerebrum

39
Q

what does superior cerebellar a supply

A

superior cerebellum

40
Q

what does AICA supply

A

ant/inf cerebellum

41
Q

what does PICA supply

A

post/inf cerebellum

42
Q

anterior cranial fossa

A

ant cranial wall->lesser wing of sphenoid

contains olfactory n and bulb

43
Q

middle cranial fossa

A

lesser wing sphenoid->sup ridge petrous portion temp bone

contains optic canal, foramen R, O, S, foramen lacerum

44
Q

posterior cranial fossa

A

sup ridge petroud portion temp bone->occipital bone of post wall
contains inteernal acoustic meatus, jugular foramen, f magnum, hypoglossal canal

45
Q

falx cerebri

A

between 2 cerebral hemis

46
Q

tentorium cerebelli

A

btwn cerebrum and cerebellum

47
Q

falx cerebelli

A

between cerebellar hemi

48
Q

diaphragma sellae

A

brain and pit gland

49
Q

brs of middle meningeal a

A

frontal (ant) and parietal (post)

50
Q

middle meningeal a

A

embedded in outer layer of dura

tears lead to epidural hematoma

Anatomy II: Exam II (12 decks)

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