What happens during the repolarization phase of an action potential?

b) Potassium ions leave the cell

c) The membrane becomes more negative inside

Temporal summation occurs when:

b) A single neuron sends multiple signals in quick succession to the same postsynaptic neuron.

a) Multiple neurons stimulate a postsynaptic neuron at the same time.

c) The postsynaptic neuron generates a faster action potential.

d) The action potential moves faster along the axon.

Spatial summation occurs when:

b) Multiple neurons send signals at the same time to a postsynaptic neuron.

a) A single neuron sends multiple signals in quick succession to the same postsynaptic neuron.

c) The postsynaptic neuron generates a faster action potential.

d) The action potential moves faster along the axon.

Which of the following is the correct order of events in a simple reflex arc?

b) Stimulus → Sensory neuron → Spinal cord → Motor neuron → Effector

a) Sensory neuron → Interneuron → Motor neuron → Effector

c) Motor neuron → Effector → Sensory neuron → Spinal cord

d) Stimulus → Motor neuron → Interneuron → Sensory neuron

Which of the following is an example of a simple reflex arc?

a) Pulling your hand away from a hot surface

b) Deciding to move your hand after thinking about it

c) Watching a ball approach and preparing to catch it

d) Moving your eyes to follow a moving object

neurotransmitters are

chemicals released to pass impulses from one neuron to another

Which of the following is a characteristic of an action potential?

c) It is an all-or-nothing response

a) It decreases in strength as it travels along the axon

b) It is a graded response to a stimulus

d) It requires neurotransmitters to propagate along the axon

The refractory period of a neuron:

a) Prevents the action potential from traveling backwards

b) Increases the speed of the action potential

c) Allows for stronger action potentials to occur

d) Is caused by the influx of sodium ions

Chapter 11B

Authored by Paulina Santana

Biology

University

NGSS covered

Used 29+ times

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26 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of gated channels will open in response to binding of the appropriate neurotransmitter?

voltage-gated ion channels

chemically gated ion channels

leakage ion channels

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does 3 represent?

resting state

repolarization

depolarization

hyperpolarization

Tags

NGSS.HS-PS2-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

There is a higher concentration of on the outside of the cell and a higher concentration of on the inside.

K+; Na+

Ca+; K+

Na+; K+

Na+; Ca+

Tags

NGSS.HS-LS1-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Sodium potassium pump:

pumps 2 Na+ out; pumps in 2 K+

pumps in 3 Na+; pumps out 2 K+

pumps out 3 Na+; pumps in 3 K+

pumps out 3 Na+; pumps in 2 K+

Tags

NGSS.HS-LS1-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does 4 represent?

resting state

repolarization

depolarization

hyperpolarization

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What event is this: Na+ channels open

hyperpolarization

resting state

repolarization

depolarization

Tags

NGSS.HS-PS2-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What event is this: some K+ channels remain open, and Na+ channels reset

hyperpolarization

resting state

repolarization

depolarization

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Chapter 11B