Neuron Potential

PNS and action potential

Brain stem

Connection between the brain and the spinal cord. Controls the most basic life activities like breathing and heart beat

Peripheral Nervous System (PNS)

• Includes all the nerves that are NOT in the CNS

• With motor and sensory neurons

• Voluntary movements: somatic nervous system

• Involuntary movements: autonomic nervous system

Sympathetic vs Parasympathetic

• Sympathetic: controls all body reactions to stress

• Parasympathetic: this body system calms you down after stress

Multiple Choice

This part of the PNS controls your voluntary movements

• NCS

• Brainstem

• Somatic nervous system

• Sympathetic nervous system

Fill in the Blank

This system helps you prepare for stress

Its the way in which a neuron sends a message from the soma to the axon terminal

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Action Potential

• ​Neuron is charged negatively (-70mV)

• Na+ and K+ ions ath different [] - Sodium-Potassium pump

​Resting potential

• ​Neuron reveices stimuli

• Na+ channels open

• Neuron becomes positive +40mV

​​Action potential

• ​Neuron doesn't receive stimuli

• K+ channels open

• More negative than in resting potential

​​Refractory period

Communication between 2 neurons by the release of molecules called neurotransmitters

​Synapse

Multiple Choice

The way in which a neuron sends a message from the some to the axon terminal is known as:

• Action potential

• Hypoglucemia

• Sinapsis

• Sodium - potassium pump

Multiple Choice

This protein in the membrane of the neuron is in charge of maintaining the resting potential

• Ca+ channel

• Na+ channel

• K+ channel

• Na+/K+ pump

Fill in the Blank

The neuron releases ________ to communicate with other neurons