SBI4U 8.0 Nervous System

The part of the neuron that conducts action potentials is the:

• Axon
• Dendrite
• Axon Terminal
• Cell Body

Tags

NGSS.MS-LS1-2

The part of the neuron that receives signals is the:

• Axon
• Dendrite
• Axon Terminal
• Cell Body

Tags

NGSS.MS-LS1-2

The neurotransmitter enters the post-synaptic cell to cause depolarization.

• True
• False

Which ions are involved in the electrical nerve impulse?

• Iodine and Sodium
• Potassium and Sodium
• Iron and Sodium
• Calcium and Iodine

What is the insulating membrane that surrounds parts of the axon that helps to protect & propagate action potential?

• Axon
• Dendrites
• Node of Ranvier
• Myelin Sheath

Gaps in the myelin sheath are called this.

• Nodes of Ranvier
• Axon terminals 
• Synapses
• Neurotransmitters

Tags

NGSS.MS-LS1-3

-70 mV is the measure of a

• Threshold Potential
• Action Potential
• Resting Potential
• End Point Potential

Tags

NGSS.HS-PS2-5

Myelinated axons perfom ___________ conduction - meaning to jump or leap.

• saltatory

• continuous

• interrupted

• bounding

a signal molecule that transmits nerve impulses across synapses

• neuron
• neurotransmitter
• nerve
• action potential

The neurotransmitter most associated with control of body movements and linked to sensations of pleasure such as eating.

• Dopamine

• Serotonin

• Endorphins

• Norepinephrine