CNS

Question 1

What are the two main parts of the CNS and whats their role?

Answer 1

1) Brain responsible of cognitive functions

2) spinal cord for delivering info from sensory organs to higher brain and from brain to effectors

Question 2

what are examples of cognitive functions?

Answer 2

evaluation of sensory
stimuli, motor movements, memory
functions, thinking, speaking, emotions
and executive functions.

Question 3

How can doctors gain info about brains activity and functions?

Answer 3

Autopsy (disection)

Electrical stimulation of the brain during
surgery

Investigation of patients with brain damage

Animal studies

Electrophysiology (EEG)

Imaging techniques

Question 4

What are the three main functional parts of the brain?

Answer 4

1) Cerebral Cortex
2) Cerebellum
3) Brain Stem

Question 5

What are examples of brain imaging?

Answer 5

(CT, MRI, fMRI, MRS,

PET

Question 6

Whats the function of cerebral cortex?

Answer 6

the site where complex behaviours occur

Question 7

whats the structural features of cerebral cortex?

Answer 7

its grey but connected to rest of the brain by white matter

Question 8

whats the gyri and sulci of the brain?

Answer 8

folds and depressions in cerebral cortex that make brain wrinkled and increase cortical area

Question 9

what are the 4 lobes the cortex are divided to?

Answer 9

Frontal Cortex

Parietal cortex

Temporal Cortex

Occipital Cortex

Question 10

whats the function of frontal cortex?

Answer 10

carries out mental actions like thinking,planning and deciding

Question 11

whats the function of parietal lobe?

Answer 11

processes sensory info about taste pain and touch and temp

Question 12

what is a saggital plane?

Answer 12

its an anatomical plane that seperates the left and right side of brain

Question 13

what is the limbic system made of?

Answer 13

1) Hypothalamus(homeostasis)
2) Amygdala (emotions)
3) Hippocampus(memory)

Question 14

Where is the limbic system found?

Answer 14

in temporal lobe

Question 15

functions of thalamus

Answer 15

sensory and motor integration

Question 16

Explain function of basal ganglia

Answer 16

responsible for learning skills

it recieves messages from all parts of cerebral cortex but only sends to frontal lobe thru thalamus

Question 17

what are glial cells

Answer 17

they support the neurons of CNS

Question 18

axon vs dendrites

Answer 18

axon is away and long

dendrites toward and short

Question 19

what is neuroplasticity

Answer 19

changes of synapses as brain develops

Question 20

The neurotransmitter that stimulates the CNS

Answer 20

glutamate

Question 21

the neurotransmitter that inhibits the CNS

Answer 21

GABA

Question 22

the neurotrasmitter involved in muscle action,learning and memory

Answer 22

Acetylcholine

Question 23

the neurotransmitter that is involved in control of hunger sleep and arousal

Answer 23

serotonin

Question 24

the neurotransmitter that is involved in alertness and arousal

Answer 24

Norepinephrine

Question 25

the neurotransmitter involved in movement thoughts and emotions

Answer 25

dopamine

Question 26

what is the reticular activating system

Answer 26

it is where all external stimuli moves into cortex of brain

Question 27

what is habituation

Answer 27

ability to ignore background stimuli

Question 28

during hypnosis,you enter trance state. what is it ?

Answer 28

a state of being unaware of whats around and you are weak

Question 29

how to test voluntary attention of a patient ?

Answer 29

ask him to spell a word backwards

Question 30

3 stages of memorizing

Answer 30

1) encoding information
2) storing information
3) retrieving information

Question 31

factors affecting perception

Answer 31

1) perciever
2) percieved
3) situation

Question 32

stages of perception

Answer 32

1) attention and selection
2) organizing info
3) interpret info
4) recalling