Nervous System

The _____ is the basic building block of the nervous system.

• soma
• neuron
• axon
• terminal

_____ neurons carry messages to the central nervous system

• Motor
• Inter
• Sensory
• Fun

_____ neurons carry  messages away from the central nervous system.

• Motor
• Inter
• Sensory
• Flower

Dendrites send messages to the terminal buttons.

• True
• False

This is the area in a neuron that determines whether or not a given neuron will 'fire.'

• Soma (cell body)
• dendrite
• axon
• terminal button

Every one of your actions arises from:

• Neural Impulses from muscles to brain
• Neural Impulses from brain to muscles

What is the all or nothing principle?

• A neuron either totally fires or doesn't at all
• A neuron will fire even with minimal stimuation
• A neuron can part way fire

Neurons only communicate with electrical signals.

• True
• False

What is reuptake?

• Returning a shirt to the store.
• nuerotransmitters moving from the synapse back to the presynaptic terminal buttons
• the building up of the myelin sheath around the axon
• the movement of negative ions to the outside of the axon

_____ are biochemical substances that are released into the synaptic cleft to stimulate or suppress other neurons.

• receptors
• hormones
• nuerotransmitters
• interneurons