Central Nervous System

What makes up the central nervous system? (Select all)

• Peripheral nerves

• Brain

• Spinal Cord

• Sensory receptors

What insulates and protects the axon of a neuron?

• axon terminal

• dendrite

• myelin sheath

• soma

What provides nutrients and protection to the brain?

• blood

• cerebrospinal fluid

• medication

• spinal cord

How many axons does a neuron have?

• one

• two

• three

• many

Which type of neuron carries messages from the brain and spinal cord to the muscles or glands?

• afferent neurons

• associative neurons

• sensory neurons

• efferent neurons

What is the space between the dendrite and the axon called?

• action potential

• synaptic cleft

• neurotransmitter

• nodes of Ranvier

What chemical substance helps messages across the synapse from the neuron to the target receptor?

• action potential

• impulse

• neurotransmitter

• stimulus

What path does an impulse take down the neuron?

• Axon → axon terminal → dendrite → soma

• Dendrite → soma → axon → axon terminal

• Dendrite → axon terminal → soma → axon

• Soma → axon → dendrite → axon terminal

What are the outer membranes of the brain called?

• Cerebral cortex

• Meninges

• Ventricles

• Subdural space

What is the dense, outermost membrane called?

• Dura mater

• Third ventricle

• Pia mater

• Arachnoid mater