Psych exam 2 prep

Question 1

• Correlate w specific places

- let you know where you are going and where you currently are

Answer 1

place cells

Question 2

• Are learned and used by your hippocampus

- stored in cortex

Answer 2

navigational maps

Question 3

• The first step of neurotransmission

- Occurs on dendrites and soma

Answer 3

Input

Question 4

• occurs at the axon hillock

- Is the second step of neurotransmission

Answer 4

Trigger

Question 5

Every neuron has it’s own unique action potentials

Answer 5

true

Question 6

• come in many sizes and types

- Are found in the CNS + PNS (whole body)

Answer 6

neurons

Question 7

• are the neuron’s cell body

- Can be round or triangle shaped

Answer 7

Soma

Question 8

• extend from the soma

- Have 99% of excitatory receptors

Answer 8

Dendrites

Question 9

• Contain large numbers of sodium channels

- Connects the soma and axon

Answer 9

axon hillock

Question 10

• the long skinny part of a neuron

- is what the action potential travels down

Answer 10

Axon

Question 11

• A chemical produced by a neuron that acts on another neuron
• ex: dopamine

Answer 11

Neurotransmitters

Question 12

• Not released by neurons but works on them

- Ex: CCK and galanin

Answer 12

Neuroactive substances

Question 13

• is a small peptide hormone

- targets hypothalamus

Answer 13

CCK

Question 14

• a neuroactive substance

- released during brown fat breakdown

Answer 14

Galanin

Question 15

• has 3 million neurons and does neurogenesis

- shaped kind of like 2 bananas

Answer 15

hippocampus

Question 16

• is the normal state of a neuron, at rest

negative 100mV

Answer 16

resting membrane potential

Question 17

• open when absolute threshold is met

- are voltage-gated channels

Answer 17

channels of the axon hillock

Question 18

your brain uses 20% of your glucose intake

Answer 18

true

Question 19

• is an excitatory neurotransmitter

- causes increase in sodium

Answer 19

acetylcholine

Question 20

• is an energy source

- adenosine Tri Phosphate

Answer 20

ATP

Question 21

• comes from ATP being broken down
• used as a neurotransmitter in brainstem
• makes you tired when there is a lot

Answer 21

adenosine

Question 22

• mimic naturally occuring neurotransmitter

- produces same effect as chemical

Answer 22

agonist

Question 23

• binds to receptor but does nothing

Answer 23

antagonist

Question 24

• is 15% of people who initially go in for treatment of anxiety
• looks like anxiety

Answer 24

caffeinism

Question 25

Neurotransmission has 4 steps

Answer 25

false