HBS 2.1.3-2.1.4 Action Potential & Synapses

During rest, which ion is found at a higher level inside the neuron?

• Sodium
• Potassium
• Sugar
• Chloride

During rest, which ion is found at a higher level outside the neuron?

• Sodium
• Potassium
• Sugar
• Chloride

What is the voltage maximum for a neuron?

• -70 mv
• -55 mv
• 30-40 mv
• -110 mv

Which type of channels open in an action potential? 2 answers

• Sodium
• Potassium
• Chloride
• Sugar

What is the voltage for the threshold of a neuron?

• -70 mv
• -55 mv
• 40 mv
• -110 mv

What is the voltage for the hyperpolarization of a neuron?

• -70 mv
• -80 mv
• 40 mv
• -110 mv

Which direction does the Action Potential travel in a neuron?

• Cell Body to axon terminals
• Nodes of Ranvier to Cell Body
• Cell Body to Dendrites
• Dendrites to Nodes of Ranvier

After an action potential, what restores the correct concentrations of ions?

• Sodium-Potassium Pump
• Sodium Channel
• Chloride Channel
• Potassium Channel

Which type of channel opens first?

• Sodium
• Potassium
• Chloride
• Sugar

Where does a signal (like an action potential) enter a neuron?

• Axon
• Dendrite
• Axon Terminals