General Structure Nervous System Flashcards Preview

Jason's Neuro Block > General Structure Nervous System > Flashcards

Flashcards in General Structure Nervous System Deck (46):
1

PNS made of two things

Nerves
ganglia

2

why is white matter white?

due to myelinated (fat) axons and glia

3

why is grey matter grey?

dendrites, somata and glia

4

L and R hemispheres of Cerebrum split by?

longitudinal fissure

5

What are the ridges?

gyri

6

What are the grooves?

sulci

7

surface of cerebrum is called the?

cortex

8

cerebrum is site of 4 big things

language
memory
emotions
self-awareness

9

What does the central sulcus divide?

frontal and parietal lobes

10

What does the lateral sulcus divide?

temporal from frontal/parietal

11

Brodmann's Areas are based on what differences?

cellular differences in organisation

12

PET scans look at?

areas of high metabolic activity

13

how many layers in cortex? thickness of cortex?

6 layers
1cm think

14

left and right cortices linked where?

corpus callosum

15

Cerebellum does 2 things to motor

compares intention to execution
refines execution

16

Basal Ganglia is where?

diencephalon

17

Basal Ganglia important for?

motor control

18

Damaged Basal Ganglia leads to what 2 diseases?

Parkinson's
Huntington's

19

Thalamic nuclei project in 3 ways:

relay sensory
relay non-sensory
project globally: arousal/sleep

20

what controls pituitary?

hypothalamus

21

what controls facial muscles and sensation?

brainstem

22

what controls cardiorespiratory system?

brainstem

23

how does the brainstem controls facial muscles and sensation?

via 10 of the 12 cranial nerves

24

Cranial nerves can be motor and/or sensory?

purely motor
purely sensory
mixed

25

CNS made up of two things:

brain
spinal cord

26

spinal cord connects to?

medulla

27

Dorsal horns mainly for?

sensory

28

ventral horns mainly for?

motor

29

spinal cord: where is grey, where is white matter?

grey in middle, surrounded by white

30

in brain: where is grey, where is white matter?

white in middle, surrounded by grey

31

spinal cord ends at what level?

L1/2

32

spinal nerve is formed by what two things?

dorsal and ventral roots

33

dorsal root ganglion is what?

collection of sensory nerve cell bodies, on axon to periphery, one to dorsal horn

34

do cranial nerves have ganglia?

yep, cranial nerve ganglia

35

3 kinds of peripheral nerves:

sensory
motor
autonomic

36

where is CSF made?

choroid plexus in the ventricles

37

where does CSF flow out of?

4th ventricle

38

CSF acts as what to brain?

shock absorber

39

3 meninges are?

Dura (thick)
Arachnoid (fibrous)
Pia (thin)

40

CSF fills what area in the meninges? how is it reabsorbed?

subarachnoid space
reabsorbed by veins at arachnoid granulations

41

Falx and Tentorium divide what?

Falx: L&R hemispheres
Tentorium: cerebellum from occipital lobe

42

BBB formed by what cells?

endothelial cells of capillaries

43

BBB of capillaries are special how? 3 reasons

lack pinocytotic transfer
very tight junctions
mostly active transport

44

BBB good with fat or water soluble?

Fat soluble

45

What is the lentiform nucleus made up of?

Putamen/Globus Pallidus

46

What is the striatum made up of?

caudate and putamen