Gross Brain, Meninges, and Cranial Fossa

Question 1

frontal lobe

Answer 1

primary motor and personality area

Question 2

parietal lobe

Answer 2

primary sensory and integration area

Question 3

occipital lobe

Answer 3

primary visual area

Question 4

temporal lobe

Answer 4

auditory, speech, olfactory, memory

Question 5

cerebellum

Answer 5

fine motor coordination

Question 6

pons

Answer 6

CN nuclei and tracts between cerebrum and berebellum

Question 7

medulla

Answer 7

BP and respiration regulation

Question 8

corpus callosum

Answer 8

middle brain feature

fibers connecting cerebral hemispheres

Question 9

thalamus

Answer 9

middle brain feature

relay station for senses (not olfaction)

Question 10

hypothalamus

Answer 10

middle brain feature

center for autonomic and endocrine function

Question 11

pituitary gland

Answer 11

middle brain feature

homeostasis

Question 12

mammillary bodies

Answer 12

middle brain feature

nuclei related to emotions

Question 13

which CN cannot be seen on ventral brain surface

Answer 13

CN IV

Question 14

CNs exiting ventral brain

Answer 14

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

Question 15

ICA

Answer 15

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

Question 16

vertebral a

Answer 16

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

Question 17

what structures are in parotid gland

Answer 17

retromandibular v
ECA
CN VII

Question 18

what forms retromandibular v, and where does it drain

Answer 18

superficial temp v and maxillary v

drains to EJV and IJV

Question 19

ECA

Answer 19

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)

Question 20

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

Answer 20

ICA, IJV, CN X

deep to parotid bed

Question 21

sensory ganglion of CN VII

Answer 21

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

Question 22

contents of temporal fossa

Answer 22

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

Question 23

auriculotemporal n

Answer 23

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

Question 24

ant and post deep temporal nn

Answer 24

br of CN V3

passes sup to lat pterygoid m, deep to temporalis

Question 25

borders of infratemporal fossa

Answer 25

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

Question 26

contents of infratemporal fossa

Answer 26

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

Question 27

CN V3

Answer 27

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

Question 28

2 divisions of Cn V3

Answer 28

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

Question 29

brs of CN V3

Answer 29

``` 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) ```

Question 30

chorda tympani

Answer 30

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

Question 31

TMJ

Answer 31

- modified hinge synovial joint - disc moves forward, mand moves forward - stylomand ligament - sphenomand lingament

Question 32

stylomandibular ligament

Answer 32

styloid process -> post border of ramus | separates parotid and submand glands

Question 33

sphenomandibular ligament

Answer 33

spine of sphenoid bone -> lingula of mand | separated from capsule by max a and auriculotemp n

Question 34

ICA brs

Answer 34

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

Question 35

vertebrobasilar system

Answer 35

- vert a gives ant and post spinal aa and PICA - basilar gives AICA - splits to form post cerebral - supplies posterior brain

Question 36

what does anterior cerebral supply

Answer 36

ant/med cerebrum

Question 37

what does middle cerebral a supply

Answer 37

ant/lat cerebrum

Question 38

what does posterior cerebral a supply

Answer 38

post/inf cerebrum

Question 39

what does superior cerebellar a supply

Answer 39

superior cerebellum

Question 40

what does AICA supply

Answer 40

ant/inf cerebellum

Question 41

what does PICA supply

Answer 41

post/inf cerebellum

Question 42

anterior cranial fossa

Answer 42

ant cranial wall->lesser wing of sphenoid | contains olfactory n and bulb

Question 43

middle cranial fossa

Answer 43

lesser wing sphenoid->sup ridge petrous portion temp bone | contains optic canal, foramen R, O, S, foramen lacerum

Question 44

posterior cranial fossa

Answer 44

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

Question 45

falx cerebri

Answer 45

between 2 cerebral hemis

Question 46

tentorium cerebelli

Answer 46

btwn cerebrum and cerebellum

Question 47

falx cerebelli

Answer 47

between cerebellar hemi

Question 48

diaphragma sellae

Answer 48

brain and pit gland

Question 49

brs of middle meningeal a

Answer 49

frontal (ant) and parietal (post)

Question 50

middle meningeal a

Answer 50

embedded in outer layer of dura | tears lead to epidural hematoma