L8 - forebrain

Question 1

origin or forebrain

Answer 1

prosencephalon

Question 2

contents of forebrain

Answer 2

inner and outer

Question 3

contents of inner brain

Answer 3

diencephalon

Question 4

contents of outer brain

Answer 4

telencephalon

Question 5

contents of diencephalon

Answer 5

thalamus

hypothalamus

Question 6

contents of telencephalon

Answer 6

• cerebral cortex and CN1
• corpus striatum
• limbic structures
• subcortical fibres
• cerebral hemisphers

Question 7

role of forebrain

Answer 7

responsible for a higher level processing such as memory, cognition, learning, integration…etc

Question 8

what is the telencephalon

Answer 8

two swellings on either side of the midline connected via the lamina terminalis

Question 9

development of the diencephalon

Answer 9

swellings of the lateral aspect of the central canal, the lumen of the central canal is diminished , forming the diencephalon

Question 10

location of thalamus on the diencephalon

Answer 10

dorsally

Question 11

location of hypothalamus on the diencephalon

Answer 11

ventrally

Question 12

which ventricle lies in the middle of the diencephalon

Answer 12

3rd

Question 13

location of inferior horn of lateral ventricle

Answer 13

temporal lobe

Question 14

location of anterior horn of lateral ventricle

Answer 14

frontal lobe

Question 15

location of posterior horn of lateral ventricle

Answer 15

occipital lobe

Question 16

role of thalamus

Answer 16

relay station between parts of CNS

Question 17

role of hypothalamus

Answer 17

autonomic and neuroendocrine functions

Question 18

role of subthalamus

Answer 18

functionally part of basal nuclei - involved in motor control

Question 19

role of epithalamus

Answer 19

includes pineal gland - secretes melatonin

Question 20

basal nuclei

Answer 20

cell bodies in the cns

Question 21

what is the thalamus composed of

Answer 21

grey matter

Question 22

how are the thalami connected

Answer 22

interthalamic adhesion / mass intermedia

Question 23

motor processing of thalamus

Answer 23

through connections with basal ganglia and cerebellum

Question 24

nuclei and internal organisation of thalami

Answer 24

anterior nuclear group
medial nuclear group
lateral nuclear group

Question 25

lateral nuclear group of the thalami

Answer 25

ventral posterior lateral ventral posterior medial lateral geniculate medial geniculate

Question 26

role of ventral posterior lateral

Answer 26

receives information from somatic sensory system and send information to primary sensory cortex

Question 27

role of ventral posterior medial

Answer 27

recieve information from somatic sensory system and send information to primary sensory cortex

Question 28

lateral geniculate

Answer 28

receives information from vision and sends to visual cortex

Question 29

medial geniculate

Answer 29

connects auditory apparatus and project to auditory cortex

Question 30

cheif structure of homeostasis and autonomic control

Answer 30

hypothalamus

Question 31

anterior border of hypothalamus

Answer 31

anterior commissure and lamina terminalis

Question 32

anterior and ventral border of hypothalamus

Answer 32

optic chiasma

Question 33

location of limbic lobe

Answer 33

sits on the medial surface and expands into the 4 surrounding lobes

Question 34

limbic system

Answer 34

memory and emotion

Question 35

where does CN1 develop

Answer 35

telencephalon

Question 36

corpus striatum

Answer 36

internal structures of grey matter of each cerebral hemisphere - involved in motor control

Question 37

what is the corpus striatum part of

Answer 37

basal ganglia

Question 38

structures within the corpus striatum

Answer 38

- globus pallidus - putamen - caudate nucleus

Question 39

location of putamen within corpus striatum

Answer 39

more lateral

Question 40

shape of caudate nucleus

Answer 40

C shape with a little tail

Question 41

why does the corpus striatum appear stripy

Answer 41

caudate nucleus and putamen are separate so have cellular bridges connecting them

Question 42

location of caudate nucleis

Answer 42

- head and body form lateral wall of lateral ventricle | - tail forms roof of inferior horn of lateral ventricle

Question 43

hemispheric limbic structures

Answer 43

- hippocampus - fornix - amygdala

Question 44

hippocampus

Answer 44

- looks like sausage | - connected to fornix

Question 45

location of fornix

Answer 45

arches over the thalamus

Question 46

Cumbria of fornix

Answer 46

bring white matter fibres from hippocampus and converge them to form the crus of the fornix more anteriorly

Question 47

shape of fornix

Answer 47

C shape

Question 48

columns of the fornix

Answer 48

white matter structures which connect efferent fibres and delve into maxillary bodies of hypothalamus

Question 49

amygdala

Answer 49

tiny nuclei

Question 50

which type of fibre does the fornix contain?

Answer 50

efferent and afferent

Question 51

classes of fibres in the white matter on the hemisphere

Answer 51

- association - commissural - projection

Question 52

role of association fibres

Answer 52

interconnect areas within a hemisphere and adjacent gyri

Question 53

short association fibres

Answer 53

connect pre and post central gyri

Question 54

long association fibres

Answer 54

connect lobes of the brain

Question 55

role of commissural fibres

Answer 55

interconnect areas between hemispheres

Question 56

components of the corpus callosum

Answer 56

rostrum genu body splenium

Question 57

anterior commisure

Answer 57

small commissural fibres which contain white matter between the hemispheres and forms a relationship with the hypthalamus

Question 58

hippocampal commissure

Answer 58

allows information from one hippocampus to each the other

Question 59

role of projection fibres

Answer 59

interconnection cerebrum with rest of CNS

Question 60

projection fibres - corona radiata

Answer 60

funnels down as the internal capsule - they are continuous

Question 61

what type of fibres are projection fibres

Answer 61

ascending and descending

Question 62

location of internal capsule

Answer 62

passes between head of caudate and lentiform nuclei

Question 63

posterior limb in internal capsule

Answer 63

between thalamus and lentiform nucleic laterally

Question 64

anterior limb of internal capsule

Answer 64

between head od caudate and putamen

Question 65

part of internal capsule that bends like a knee

Answer 65

genu of internal capsule