What are the main components of the nervous system?

• Heart, lungs, and stomach

• Brain, spinal cord, and nerves

• Bones, muscles, and skin

• Liver, kidneys, and intestines

What is the primary role of the nervous system?

• To digest food

• To circulate blood

• To send electrical signals and regulate bodily functions

• To produce hormones

What are nerves?

• Bundles of tissue that carry signals from one place to another.

• Columns of nerve tissue that run through the vertebrae.

• Parts of the central nervous system.

• Parts of the peripheral nervous system.

What is the spinal cord?

• A bundle of tissue that carries signals.

• A column of nerve tissue that runs through the vertebrae.

• Part of the peripheral nervous system.

• A type of muscle tissue.

Which part of the nervous system includes the brain and spinal cord?

• Peripheral nervous system

• Central nervous system

• Autonomic nervous system

• Somatic nervous system

What part of the nervous system do the nerves that send messages belong to?

• Central nervous system

• Peripheral nervous system

• Autonomic nervous system

• Somatic nervous system

What are the two main parts of the nervous system?

• Central nervous system and peripheral nervous system

• Digestive system and respiratory system

• Muscular system and skeletal system

• Circulatory system and lymphatic system

After the CNS interprets a response, what does the PNS do?

• It ignores the message.

• It acts on the message.

• It sends the message back to the CNS.

• It deletes the message.

What are nerve cells also referred to as?

• Axons

• Dendrites

• Neurons

• Myelin

What is a group of neurones called?

• Axon

• Nerve

• Dendrite

• Myelin