Anatomy & Physiology Nervous System Review

The part of a neuron that receives information from other neurons

• axon

• dendrites

• myelin sheath

• synapse

This is a signal molecule that transmits nerve impulses across synapses

• neuron

• neurotransmitter

• nerve

• action potential

Which ions are involved in the electrical nerve impulse?

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

What contains the nucleus of the neuron?

• Terminal Bouton

• Cell Body

• Axon Hillock

• Myelin Sheath

Tags

NGSS.MS-LS1-2

When a neuron is depolarized, what are the first channels to open?

• Sodium
• Potassium
• Calcium
• ACTH

-50 mV is the measure of a

• Threshold Potential

• Action Potential

• Resting Potential

• End Point Potential

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

Which of the following uses ACTIVE transport?

• sodium-potassium pump

• sodium channel

• potassium channel

• diffusion

This type of channel respondes to a change in the electrical potential of the cell membrane

• leaky
• voltage gated
• mechanically gated

Myelinated axons perfom ___________ conduction

• saltitory
• continuous