BRAIN

Question 1

CNS Consists of:

Answer 1

Brain and Spinal cord

Question 2

What is the brain covered in?

Answer 2

meningeal sheath - protective coating that layers around the brain

Question 3

what are the 3 layers of the meningeal sheath?

Answer 3

PAD
Pia - thinner and weak layer
Arachnoid - middle
Dura - toughest layer

Question 4

what are the 3 main areas of the brain?

Answer 4

The forebrain (cerebrum), midbrain, hindbrain

Question 5

what are the 4 lobes in the cerebrum

Answer 5

Frontal, parietal, temporal, occipital

Question 6

what is the cortex thickness

Answer 6

average 1.5mm

Question 7

what does the inner surface of the cerebrum consist of?

Answer 7

myelinated nerve fibre axons - white matter

Question 8

what is corpus callosum

Answer 8

bundle of nerve fibres

Question 9

what is central sulcus?

Answer 9

divides the sensors and motor areas of the brain

Question 10

where is the hypothalamus

Answer 10

behind the optic chiasma, projects downwards, ends at the stalk and connects to the pituitary gland.
pituitary gland lies below the optic chiasma

Question 11

What is the shape of the Lateral Geniculate Bodies

Answer 11

Knee shaped
2 masses of nerve cells bodies
they lie between the optic tracts and optic radiations

Question 12

what are the 4 colliculi in the mid brain

Answer 12

2 superior (upper) - contain visual reflex nuclei 
2 inferior (lower) - contain auditory nuclei

Question 13

function of the midbrain

Answer 13

controls eye movements

involved in auditory respsonses

Question 14

what does cerebrospinal fluid do?

Answer 14

nutrients and protection to brain

Question 15

function of The Pons

Answer 15

associated with voluntary and involuntary eye movements

Question 16

Function of the cerebellum

Answer 16

controls and modifies posture, balance and movement

Question 17

What does the brain stem consist of

Answer 17

the midbrain, pons, medulla oblongata