ch 12 pt 3 nervous system

Question 1

What are neurotransmitters?

Answer 1

Transmit signals from nerve cells to target cells.

Question 2

4 main chemical classes of neurotransmitters

Answer 2

ACh, Biogenic amines, Amino acids, and neuropeptides

Question 3

What is acetylcholine (ACh)?

Answer 3

Structure differs from other transmitters, big with skeletal muscles

Question 4

What are biogenic amines?

Answer 4

Modified amino acids

Question 5

What is catecholamines used for?

Answer 5

Dopamine; forming habits

Question 6

What are amino acids

Answer 6

Make proteins

Question 7

What are neuropeptides?

Answer 7

Not yet a protein; chains of amino acids

Question 8

What are direct transmitters?

Answer 8

Bind to receptors that are chemically gated channels

Question 9

What are indirect transmitters?

Answer 9

Bind to receptors that involve G-proteins and second messengers

Question 10

What are the 3 ways to remove ACh?

Answer 10

Reuptake, AChE, diffusion

Question 11

What are neuromodulators?

Answer 11

Chemicals that alter response of local neurons

Question 12

What increases number of neurotransmitters in cleft?

Answer 12

Facilitation (EPSP)

Question 13

What decreases number of neurotransmitters in cleft?

Answer 13

Inhibition (IPSP)

Question 14

What does nitric oxide do?

Answer 14

Effects in the PNS include blood vessel dilation

Question 15

What does endocannabinoids do?

Answer 15

Influence memory, appetite

Question 16

What are the 4 types of circuits in a neuronal circuit?

Answer 16

Converging, Diverging, Reverberating, Parallel-after-discharge

Question 16

What is parallel-after-discharge?

Answer 16

Why you’re thinking right now

Question 16

What does reverberating do?

Answer 16

Why you don’t die in your sleep

Question 17

Whats the response of a parallel-after-discharge circuit?

Answer 17

To take a lot of information into a response

Question 17

What’s the response of a reverberating circuit?

Answer 17

Retriggers responses