brain part 2: exam 4 (final) Flashcards Preview

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Flashcards in brain part 2: exam 4 (final) Deck (36):
1

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

the diencephalon

2

what is 80% of the diencephalon?

the thalamus

3

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

intermediate mass (thalamus)

4

what is the internal medullary lamina?

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)

5

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

the hypothalamus

6

what is the mammillary region of the hypothalamus?

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

7

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

tuberal region

8

what is the supraoptic region?

area superior to optic chiasma (eye)

9

what is the preoptic region?

most anterior part of hypothalamus

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?

epithalamus

11

what is the the cerebrum?

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

12

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

the cerebral cortex

13

what is gyri?

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

14

what are the shallow crevices between the gyri?

sulci

15

what are fissures?

deep folds of cerebral cortex between the gyri

16

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

longitudinal fissure

17

what is the corpus callosum?

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

18

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

falx cerebri

19

what are lobes of the brain?

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

20

what separates the frontal and parietal lobes?

the central sulcus

21

what separtes the frontal and temporal lobes?

lateral cerebral sulcus

22

what separates the parietal and occipital lobes?

the parietoccipital sulcus

23

what is the transverse fissure?

separates the cerebrum from the cerebellum

24

what is white mater?

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

25

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

basal ganglia

26

where is the cerebellum located?

its inferior to the cerebrum, posterior to brain stem

27

what is the vermis of the cerebellum?

it is the constricted region at midline

28

what is the cerebellar hemisphere?

expanded regions lateral to vermis, separated into lobes:
a)anterior lobe
b)posterior lobe
c)flocculonodular lobe

29

what are the ridges on the cerebellum surface?

folia

30

doe sthe cerebellum have grey mater?

yes on the outer surface of the cerebellum is gray mater

31

does the cerebellum have white mater?

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

32

what is the cerebellar nuclei?

areas of grey mater in white mater

33

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

cerebellar peducles

34

what is the inferior cerebellar peducles?

connects to the medulla oblongata

35

what is the middle cerebellar peduncle?

connects to pons

36

what is the superior cerebellar peduncles?

connects to midbrain