Nervous System Structure and Functions

What is the primary job of the nervous system?

• To digest food

• To allow the body to react with internal and external environments

• To circulate blood

• To produce hormones

What does CNS stand for in the context of the nervous system?

• Central Nervous System

• Cerebral Nervous System

• Cranial Nervous System

• Cellular Nervous System

What are the basic functional cells of the nervous system called?

• Neurons

• Erythrocytes

• Osteocytes

• Myocytes

Which part of the neuron sends information to other neurons?

• Dendrites

• Axon

• Cell body

• Axon hillock

Where does the action potential begin in a neuron?

• Dendrites

• Axon

• Cell body

• Axon hillock

What protects the brain and spinal cord?

• Muscles

• Skin

• Skull and vertebral bones

• Cartilage

What is the center of the neuron structure called?

• Axon

• Dendrites

• Cell body (soma)

• Axon hillock

What is the role of the cell body in a neuron?

• To send messages out of the cell

• To house the cell nucleus and organelles

• To transmit impulses to other neurons

• To mark the end of the axon

What is the function of the myelin sheath?

• It stores nutrients for the neuron.

• It speeds up the conduction of action potentials.

• It connects neurons to blood vessels.

• It produces neurotransmitters.

What is a synapse?

• A type of neuron.

• A junction point between two neurons.

• A protective layer around the brain.

• A type of neurotransmitter.