L5 General Morphology and Surface Anatomy

Question 1

what is the insula concealed by?

Answer 1

lateral (Sylvian) sulcus/fissure

Question 2

what sulcus surrounds the insula?

Answer 2

circular sulcus

Question 3

what sulcus is almost continuous with the cingulate sulcus?

Answer 3

the collateral sulcus

Question 4

what does the medial ext. of the central sulcus divide?

Answer 4

frontal and parietal lobes

Question 5

what does the parieto-occupital sulcus divide?

Answer 5

parietal and occipital lobes

Question 6

what does the superior ext of the limbic lobe sit between?

Answer 6

corpus collasum and cingulate sulcus

Question 7

what does the cingulate sulcus separate?

Answer 7

frontal and parietal lobe from limbic lobe

Question 8

what is the track of CN I olfactory n.?

Answer 8

olfactory bulb – olfactory tract – olfactory cortex

Question 9

what is the track of CN II optic n.?

Answer 9

optic chiasm – optic tract – lateral geniculate body

Question 10

what is the track of CN III oculomotor n.?

Answer 10

interpeduncular fossa

Question 11

what is the track of CN IV trochlear n.?

Answer 11

caudal to inferior colliculi

Question 12

what is the track of CN V trigeminal n.?

Answer 12

pons

Question 13

what is the track of CN VI abducens n.?

Answer 13

ponto-medullary junction

Question 14

what is the track of CN VII facial n.?

Answer 14

cerebellopontine angle (tumors frequent)

Question 15

what is the track of CN VIII vestibulocochlear n.?

Answer 15

cerebellopontine angle (tumors frequent)

Question 16

what is the track of CN IX glossopharyngeal n.?

Answer 16

postolivary sulcus

Question 17

what is the track of CN X vagus n.?

Answer 17

postolivary sulcus

Question 18

what is the track of CN XI Spinal accessory n.

Answer 18

postolivary sulcus

Question 19

what is the track of CN XII hypoglossal n.?

Answer 19

medulla, preolivary sulcus

Question 20

injury to frontal lobe could knock out what n.?

Answer 20

CN 1 olfactory - smell

Question 21

what could happen in diecephalic injuries?

Answer 21

blindness

Question 22

what could happen in midbrain injuries?

Answer 22

knock out CN 3 and 4

Question 23

what could happen in herpes was lying dormant in trigeminal n.?

Answer 23

could attack temporal lobe - seizures

Question 24

the ventral and lateral column are what?

Answer 24

motor and sensory

Question 25

what does white matter contain?

Answer 25

efferent (motor) and afferent (somatosensory) tracts that form 3 columns

Question 26

What does the lateral/intermediate horn (ventral horn enlargment) do at spinal segments T1-L2 and S2-S4?

Answer 26

autonomic function

Question 27

what are denticulate ligaments?

Answer 27

given off from pia mater - fuses with arachnoid and dura mater

Question 28

what is the filum terminale?

Answer 28

pia mater caudal extension that joins with dura and attaches to coccyx

Question 29

what is the opercula area?

Answer 29

parts of the frontal, parietal and temporal lobe that covers the insula

Question 30

where are Broca’s motor speech areas using Brodmann’s map?

Answer 30

left hemi
area 45 - pars triangularis
area 45 - pars opercularis

Question 31

where is Wernicke’s receptive speech area using Brodmann’s map?

Answer 31

left hemi

post. portion of area 22 - planum termporale

Question 32

where is primary motor cortex using Brodmann’s map?

Answer 32

area 4 - pre central gyrus

Question 33

where is the primary somatosensory cortex using Brodmann’s map?

Answer 33

areas 1,2,3 - postcentral gyrus

Question 34

what happens if you injure area 17 on Brodmann’s map?

Answer 34

might go blind

Question 35

what was Brodmann’s map based on?

Answer 35

cytoarchitecture - histology etc.

Question 36

what does the superior temporal gyrus overlap?

Answer 36

Brodmann’s area 22 - damage = language deficit = spoken and written = aphasia

Question 37

what happens to the uncus with an epidural hemorrhage?

Answer 37

punches through tentorial notch and compresses the midbrain = coma

Question 38

what are the functions of the piriform cortex, the peri-amygdaloid cortex and the entorhinal cortex?

Answer 38

process olfactory info - primitive processing - if something that smells makes you sick, the next time you smell it you want to avoid it.

Question 39

the tissue around what structure is vital for vision?

Answer 39

calcarine fissure (sulcus)

Question 40

what does the fornix connect?

Answer 40

hippocampus and the mamillary bodies

Question 41

what structure connects that two thalami?

Answer 41

massa intermedia