Role of Neurotransmitters and Parkinson's Disease

Question 1

What is a neurotransmitter?

Answer 1

Chemical messages that transport info from one neuron to the next

Question 2

What is the place called where the neurons communicate with each other

Answer 2

synapse

Question 3

What is reuptake?

Answer 3

Process where the neurotransmitter does not bind with a receptor and then is absorbed back into the terminal buttons

Question 4

what is a synapse?

Answer 4

A place where two neurons communicate

Question 5

what is the presynaptic neuron

Answer 5

neuron that releases the neurotransmitters

Question 6

What is the postsynaptic neuron?

Answer 6

neuron that receives the neurotransmitters

Question 7

A neurotransmitter acts as a?

Answer 7

key

Question 8

A receptor site acts like a?

Answer 8

lock

Question 9

What is the lock and key process?

Answer 9

process where the neurotransmitter acts like a key and has to specifically bind to a receptor site that acts like a lock

Question 10

What happens when a neurotransmitter does not bind with a receptor?

Answer 10

reuptake

Question 11

What is the role of an inhibitory neurotransmitter

Answer 11

can block prevent the post synaptic neuron firing

Question 12

What is the role of a excitatory neurotransmitter?

Answer 12

to stimulate or activate the firing action of the presynaptic neuron
- increase the amount of firing

Question 13

What is the main excitatory neurotransmitter and its role

Answer 13

glutamate

- enhances the transmission and makes the postsynaptic neuron more likely to fire

Question 14

What is the main inhibitory neurotransmitter and it’s role?

Answer 14

GABA

- prevents the firing of the neurotransmitter in the postsynaptic neuron

Question 15

What is parkinsons disease?

Answer 15

neurodegenerative disorder in the CNS that is characterised by motor and non-motor symptoms

Question 16

What are the motor symptoms of Parkinson’s disease?

Answer 16

stiff muscles
tremors
slow voluntary movement
- only occurs after certain loss of neurons

Question 17

What are the non-motor symptoms of parkinson’s disease?

Answer 17

depression
dementia
pain
reduced facial expression

Question 18

What is the substania nigra?

Answer 18

located in the midbrain

- responsible for the voluntary control of muscle movements

Question 19

What neurotransmitter does the substania nigra produce?

Answer 19

dopamine

Question 20

What is the role of dopamine?

Answer 20

produced by the substania nigra and helps execute flawless voluntary movements

Question 21

What happens when the substania nigra is damaged?

Answer 21

causes the amount of dopamine to reduce as the neurons die off

Question 22

When do we start to experience the motor symptoms of Parkinson’s disease?

Answer 22

after we lose 60% of neurons in the substania nigra

Question 23

What are the causes of Parkison’s disease?

Answer 23

genetics
age
drugs
vitamin b deficiency

Question 24

What are the two types of medications for Parkinson’s disease

Answer 24

one that can mimic the role of dopamine

one that can be converted into dopamine with the help of the neurons