Cns Pl3 Reticular Formation

Front 1

RAS Location

Back 1

in the brain stem

occupies central portion of medulla, pons, 4th ventricle and cerebral aqueduct

Hint 1

4 places MP4A

Front 2

Formation of RAS

Back 2

neurons, processes of nuclei and pathways

Front 3

properties of RAS

Back 3

poorly defined, polysynaptic, has ascending and descending components

Front 4

median column

Back 4

•serotonergic

•next to paramedian zone

•Raphei nuclei

•extend from medulla upto midbrain in vertical sheers

Front 5

medial column

Back 5

•lateral to media column

•large cells - gigantocellular,pontine tegmental, cuneiform and sub cuneiform nuclei

Front 6

lateral column

Back 6

•lateral to medial column

•small cells - parvocellular

•visceral functions

Front 7

afferent connections of Reticular formation

Back 7

1.spinal cord from all ascending tracts

2. CN + vesitbular

3.Superior n inferior colliculi through tectoreticular fibers

4.Cerebellum

5.basal ganglia

6.neocortex

7. limbic lobe + amygaloid and hippocampus

Hint 7

7 connections

Front 8

efferent connection of reticular formation

Back 8

descending and ascending

Hint 8

2 types

Front 9

Descending Efferent connection of Reticular formation

Back 9

1. spinal cord via ?

2. brain stem cn via reticulobulbar fibres

3. cerebellum

4. red nucleus, subthalamus and hypothalamus

5.corpus striatum, neocortex and limbic node

Hint 9

5 to's

Front 10

subdivision of descending reticulospinal tracts

Back 10

1. descending facilitatory reticular prj

2. descending inhibitory reticular prj

Hint 10

one up one down

Front 11

Excitation of Reticular excitatory area

Back 11

1. peripheral sensory signals

2. + feedback signals from cortex

3. stimulation of thalamus centre

Hint 11

3

Front 12

formation of bulboreticular facilitatory area

Back 12

pons and mesencephalon

Hint 12

P + M

Front 13

fx of excitatory reticular substance released by bulboreticular facilitatory area

Back 13

•maintain tone of anti gravity muscles

•control activity levels of spinal cord reflexes

Hint 13

muscle n spinal

Front 14

reticular inhibitory area

Back 14

location: medial and ventral in med

fx:decrease activity in the superior portion of the brain by excitation of serotonergic neurons

Front 15

ARAS location and projections

Back 15

Front 16

types of ascending signal passing through thalamus

Back 16

1. rapid - acth, milisec

2. by intralaminar + reticular nuclei over surface of thalamus

Front 17

Properties of ARAS

Back 17

Front 18

Factors affecting arousal reaction

Back 18

Front 19

ARAS cortical stimulation

Back 19

Front 20

ARAS Complex polysynaptic pathway

Back 20

Front 21

Neurotransmitters of reticular formation

Back 21

Front 22

Describe norepinephrine system

Back 22

Front 23

Describe Dopamine system

Back 23

Front 24

Describe serotonin system

Back 24

Front 25

Describe Acetylcholine system

Back 25

Front 26

Importance of RAS activity

Back 26

Front 27

General fx of reticular formation

Back 27

Hint 27

9 fx

Front 28

Role of reticular formation in sleep and wakefulness

Back 28

Front 29

Role of reticular formation on muscle tone

Back 29

Front 30

Role of reticular formation on endocrine control

Back 30

Front 31

Role of reticular formation in visceral fx

Back 31

Front 32

Role of reticular formation in EEG and learning

Back 32

Front 33

RAS activation from cortex. Explain.

Back 33

Front 34

Reticular formation response to emotion and muscular activity

Back 34

Front 35

Drug exciting Reticular formation

Back 35

Hint 35

3 drugs type

Front 36

Drug inhibit reticular formation

Back 36

Hint 36

Makes u slow and and dont feel pain