Understanding Action Potential

The video tutorial from MooMooMath and Science explains the concept of action potential, also known as a nerve impulse. It describes how a stimulus triggers an action potential by opening channels in the neuron's plasma membrane, allowing sodium ions to enter and potassium ions to exit. This ion movement changes the cell's charge, creating a wave-like motion down the axon, resulting in a nerve impulse. The video concludes with a call to subscribe and share the channel's content.

What is another name for an action potential?

• Hormone release

• Cell division

• Muscle contraction

• Nerve impulse

What triggers the opening of sodium channels in the neuron?

• An increase in pressure

• A change in pH level

• A decrease in temperature

• A stimulus called a threshold

What happens to the inside of the cell when sodium ions enter?

• It becomes negatively charged

• It becomes neutral

• It becomes positively charged

• It remains unchanged

What is the role of potassium ions during an action potential?

• They do not play any role

• They remain inside the cell to maintain balance

• They leave the cell to restore a positive charge outside

• They enter the cell to increase the charge

How does the change in charge move along the axon?

• In a circular motion

• Like a wave

• In a zigzag pattern

• In a straight line