Nervous System Basics

A __________is a small space which an impulse travels to move from one neuron to another

• node

• axon

• synapse

• dendrite

Part of the neuron that receives messages and sends the to the cell body

• node

• synapse

• axon terminal

• dendrite

Part of the neuron that transmits electrical messages away from the cell body. It is also responsible for transmitting neurotransmitters to the axon terminals

• nodes

• axon

• dendrites

• synapse

Some type of chemical or physical trigger that begins an action potential

• stimuli

• sodium potassium pump

• electrical charge

• membrane potential

Nerve cells that relay impulses from sensory nerve cells to motor nerve cells

• sensory neurons

• motor neurons

• neurotransmitters

• interneurons

Nerve cells that receive information and send impulses to the brain or spinal cord

• sensory neuron

• motor neuron

• neurotransmitter

• interneuron

Nerve cells that conduct impulses from the brain to muscles and glands throughout your body

• sensory neurons

• motor neurons

• neurotransmitters

• interneurons

Chemical used to send a signal across a synapse

• Sodium ion

• neurotransmitter

• potassium ion

• action potential

The main division of the nervous system containing the brain and spinal cord

• Central nervous system

• peripheral nervous system

• Reflex arc

Whitish, fatty material that covers axons and helps to insulate the nerve

• nodes

• Myelin sheath

• phospholipid membrane

• gated channels