Nervous System Basics

Largest part of the neuron that contains the nucleus

• axon
• cell body
• synapse
• dendrites

Carries messages away from the cell body of a neuron

• nucleus
• axon
• dendrite
• myelin sheath

Carries messages to the cell body of a neuron

• synapse
• axon
• myelin sheath
• dendrite

Carries messages to your brain and spinal cord from receptors in your skin

• motor neuron
• synapse
• axon
• sensory neuron

Chemicals that are carried across the space between two nerve cells

• synapse
• neurotransmitters
• axons
• dendrites

Eyes, ears, tongue, nose, and skin are examples of __________ organs.

• vital
• motor
• sense
• nerve

Outer layer of the cerebrum, called grey matter

• medulla
• cerebellum
• cerebrum
• cerebral cortex

Connects the brain to the spinal cord and controls involuntary actions, such as breathing, blood pressure, and heartbeat.

• medulla
• cerebrum
• cerebellum
• cerebral cortex

Automatic response to the environment

• stimulus
• synapse
• reflex
• voluntary action

Sends messages from your brain and spinal cord to muscle cells

• sensory neuron
• inter neuron
• motor neuron
• reflex