brain part 2: exam 4 (final)

Question 1

what is located between the brain stem and cerebrum it is hollow contains the 3rd ventricle?

Answer 1

the diencephalon

Question 2

what is 80% of the diencephalon?

Answer 2

the thalamus

Question 3

what is the mass of nerve fibers connecting right and left sides of thalamus and crosses the 3rd ventricle?

Answer 3

intermediate mass (thalamus)

Question 4

what is the internal medullary lamina?

Answer 4

they are little walls of tissue that break up gray matter of thalamus into:
a) anterior nuclear group
b) medial nuclear group
c)lateral nuclear group 
(process sensory info)

Question 5

what is inferior/anterior of the thalamus, has no blood brain barrier?

Answer 5

the hypothalamus

Question 6

what is the mammillary region of the hypothalamus?

Answer 6

it is near the mid brain, contains mammillary bodies, processes sense of smell.

Question 7

what is the middle inferior of hypothalamus that contains the stalk of the pituitary gland?

Answer 7

tuberal region

Question 8

what is the supraoptic region?

Answer 8

area superior to optic chiasma (eye)

Question 9

what is the preoptic region?

Answer 9

most anterior part of hypothalamus

Question 10

what is the roof of the diencephalon; it is a thin bit of tissue superior to the thalamus, extends to the pineal gland (pineal body), posterior to the thalamus?

Answer 10

epithalamus

Question 11

what is the the cerebrum?

Answer 11

most anterior/superior part of the brain, in humans cerebrum grows forward and lateral and covers the diencephalon (wrinkly region)

Question 12

what is the wrinkled area, layer of grey matter 2-4 mm thick?

Answer 12

the cerebral cortex

Question 13

what is gyri?

Answer 13

they are folds of the cerebral cortex, increases surface area of the brain

Question 14

what are the shallow crevices between the gyri?

Answer 14

sulci

Question 15

what are fissures?

Answer 15

deep folds of cerebral cortex between the gyri

Question 16

what is on the mid-line of the brain that separates cerebrum into right and left hemispheres?

Answer 16

longitudinal fissure

Question 17

what is the corpus callosum?

Answer 17

it is a band of white matter at bottom of longitudinal fissure allows right and left hemispheres to communicate

Question 18

what is an extension of dura mater of meningies that extends into longitudinal fissure?

Answer 18

falx cerebri

Question 19

what are lobes of the brain?

Answer 19

cerebral hemispheres are divided into 4 lobes
1) frontal
2)parietal
3) temporal
4)occipital
lobes are separated by fissures and sulci

Question 20

what separates the frontal and parietal lobes?

Answer 20

the central sulcus

Question 21

what separtes the frontal and temporal lobes?

Answer 21

lateral cerebral sulcus

Question 22

what separates the parietal and occipital lobes?

Answer 22

the parietoccipital sulcus

Question 23

what is the transverse fissure?

Answer 23

separates the cerebrum from the cerebellum

Question 24

what is white mater?

Answer 24

all material deep to cerebral cortex most of mass of the cerebrum (nerve endings) (interior of cerebrum)

Question 25

what are groups of nuclei (grey mater, cell bodies) buried deep in white matter, communicate with lower brain regions?

Answer 25

basal ganglia

Question 26

where is the cerebellum located?

Answer 26

its inferior to the cerebrum, posterior to brain stem

Question 27

what is the vermis of the cerebellum?

Answer 27

it is the constricted region at midline

Question 28

what is the cerebellar hemisphere?

Answer 28

expanded regions lateral to vermis, separated into lobes:

a) anterior lobe
b) posterior lobe
c) flocculonodular lobe

Question 29

what are the ridges on the cerebellum surface?

Answer 29

folia

Question 30

doe sthe cerebellum have grey mater?

Answer 30

yes on the outer surface of the cerebellum is gray mater

Question 31

does the cerebellum have white mater?

Answer 31

yes it is deep in cerebellum and forms a branched structure called the arbor vitae

Question 32

what is the cerebellar nuclei?

Answer 32

areas of grey mater in white mater

Question 33

what are tracts of white mater connecting the cerebellum to brain stem?

Answer 33

cerebellar peducles

Question 34

what is the inferior cerebellar peducles?

Answer 34

connects to the medulla oblongata

Question 35

what is the middle cerebellar peduncle?

Answer 35

connects to pons

Question 36

what is the superior cerebellar peduncles?

Answer 36

connects to midbrain