Brain And Behaviour

Question 1

What makes up the PNS

Answer 1

The somatic nervous system

Automatic nervous system

Question 2

What does the SNS do?

Answer 2

Controls movement of skeletal muscles

Transmits sensomatory info to the CNS

Question 3

What does the ANS do?

Answer 3

Body’s negative function (involuntary)

Sympathetic, parasympathetic

Question 4

What’s in the CNS?

Answer 4

Brain and spinal cord

Question 5

What’s the function of the CNS

Answer 5

Carries commands from (efferent) the brain to the muscles and organs

Carries sensory info to (afferent) the brain

Question 6

What is locked in syndrome

Answer 6

Complete paralysis of voluntary muscles except eyes

Question 7

What’s the neural tube

Answer 7

Hollow tube

ORIGIN of the CNS

Question 8

What are meninges

Answer 8

• 3 layers of tissue that encase the CNS

Dura mater

Arachnoid membrane

Pia mater

Question 9

What’s the dura matter (meninge)

Answer 9

Hard mother

Outermost later

Question 10

What’s the arachnoid membrane (meninge)

Answer 10

Subarachnoid space

Filled with cerebrospinal fluid

Cushions the brain

Question 11

What’s the PIA Mater (meninge)

Answer 11

Layer adjacent to the surface of the brain

Thin and delicate

Question 12

Where is the clear cerebrospinal fluid found

Answer 12

Ventricular system

Subarachnoid space

Question 13

Why do we need cerebrospinal fluid

Answer 13

Protection from shock

Reduction of weight

Carries hormones to other areas of the brain

Question 14

What does the blood brain barrier do

Answer 14

Limits passage between the bloodstream and the brain

Question 15

How does the blood brain barrier limit passage between the blood stream and the brain?

Answer 15

Capillaries are tighter

Only small molecules can pass

Question 16

What are ventricles

Answer 16

Four hollow interconnected spaces located in the brain

All produce CSF

Question 17

What is hydrocephalus

Answer 17

Water on the brain

(CSF on the brain)

Occurs at birth or acquired

Question 18

What is the cerebral cortex

Answer 18

• bark

- outermost layer of gray matter of the cerebral hemispheres

Question 19

How thick is the cerebral cortex?

Answer 19

3mm

Question 20

What is the cerebral hemisphere

Answer 20

One of the two major portions of the forebrain

Covered by cerebral cortex

Question 21

What is a sub cortical region

Answer 21

Region located within the brain

Question 22

What is a sulcus

Answer 22

Groove in the surface of the cerebral hemisphere

Smaller than a fissure

Question 23

What is a fissure

Answer 23

Major groove in the surface of the brain

Larger than a sulcus

Question 24

What is a gyrus

Answer 24

Convolution of the cortex of the cerebral hemispheres

Separated by sulci or fissures

Question 25

What does a longitudinal fissure separate

Answer 25

2 hemispheres

Question 26

What does a lateral sulcus/ fissure separate

Answer 26

The temporal lobe from the frontal and parietal lobes

Question 27

What does a central sulcus/ fissure separate

Answer 27

Frontal lobe from the parietal lobe

Question 28

What are the 5 subdivisions of the brain

Answer 28

Telencephalon Diencephalon Mesencephalon Metencephalon Mylencephalon

Question 29

What do the frontal lobes control?

Answer 29

Executive functions (higher level cognitive functions eg problem solving) Movement / motor controls Primary motor cortex Language (brocas area)

Question 30

Where are the parietal lobes and what do they do

Answer 30

- somatosensory cortex | - spatial processing

Question 31

What are the temporal lobes connected to

Answer 31

Limbic system / hippocampus

Question 32

What do the temporal lobes do

Answer 32

Primary auditory cortex Wernickes area

Question 33

Why is the basal ganglia important

Answer 33

Movement Implicit learning Role in automatic processing of learned skill eg driving a car

Question 34

What 3 things are in the limbic system

Answer 34

Hippocampus Amygdala Cingulate gyrus

Question 35

What's the thalamus

Answer 35

"Inner chamber" Sensory relay station

Question 36

What does the thalamus do

Answer 36

Processes most info to and from brain centres

Question 37

What is the hypothalamus

Answer 37

The master gland Pituitary gland (hormone)

Question 38

What are the 2 major areas of the midbrain

Answer 38

Tectum (roof) Eye movement Auditory orienting Tegmentum (covering) Arousal Body movement