Chapter 5

Question 1

What blood vessel connects the two anterior cerebella Aa?

Answer 1

anterior communicating

Question 2

What blood vessel connects the internal carotid to the posterior cerebellar Aa?

Answer 2

posterior communicating

Question 3

What is the network of blood vessels that connects the circulation system in the brain?

Answer 3

Circle of Willis

Question 4

Name the three dural sinuses.

Answer 4

superior, inferior and transverse

Question 5

hemorrhagic

Answer 5

blood vessel leaks into brain

Question 6

ischemic

Answer 6

A blocked and prevents flow, kills brain tissue because it is toxic

Question 7

MS

Answer 7

myelin sheaths attacked 0 motor, sensory, autonomic, insidious, relapse/remit

Question 8

How many cerebral cortical neuron connection on there?

Answer 8

21 billion and they are ALL PLASTIC

Question 9

Cell body

Answer 9

soma

Question 10

dendrites

Answer 10

places where messages are received

Question 11

axon

Answer 11

transmitter of messages

Question 12

hillock

Answer 12

a place where electrical signal created

Question 13

presynaptic terminal

Answer 13

messages out

Question 14

synaptic cleft

Answer 14

between

Question 15

anterograde

Answer 15

messages from cell body through axon

Question 16

retrograde

Answer 16

axon to cell body

Question 17

local

Answer 17

starter signal, capacity to spring and send

Question 18

action

Answer 18

huge, long distance messages, big change of polarity

Question 19

WHAT ARE THE CHARGES INSIDE/OUTSIDE OF CELL

Answer 19

• IN/ + OUT

Question 20

NA and K

Answer 20

3 NA out for every 2 K in

Question 21

What is depolarization?

Answer 21

creating equal charges in and out of cell

Question 22

Depolarize

Answer 22

Excitatory, increased chance of long distance

Question 23

Hyper-polarize

Answer 23

Inhibiting, decreased chance of long distance

Question 24

receptor (modality0gated)

Answer 24

some in, small change

Question 25

synaptic (ligand-gated)

Answer 25

neurotransmitter connects with ligand lets flow - small change - can work with

Question 26

temporal summation

Answer 26

little pushes

Question 27

spatially

Answer 27

Big push

Question 28

AP is what kind of message?

Answer 28

long distance message - cell body to axon (voltage-gated)

Question 29

Where can an AP start?

Answer 29

hillock and trigger zone - both voltage-gated

Question 30

passive means?

Answer 30

long axon moved quickly

Question 31

active means?

Answer 31

far enough to create next AP

Question 32

What happens in refractory period?

Answer 32

spill than resets

Question 33

unmyelinated in location to each other?

Answer 33

right next to one another

Question 34

myelinated

Answer 34

far away

Question 35

Bipolar Neuron

Answer 35

2 major trunks, dendrite and axon - light info

Question 36

pseudo unipolar

Answer 36

peripheral axon, central axon - somato sensory

Question 37

multipolar

Answer 37

multiple dendrite, one axon - brain, somatic motor

Question 38

interneuron

Answer 38

extraordinarily tiny, 4 dendrite, from axon to another dendrite and can modify messages