CNS Chapter Test

What is included in the anatomy of the CNS?

• Brain & Spinal Cord
• Brain & Eyes
• Spinal Cord & Peripheral Nerves
• Brain & Peripheral Nerves

Which of the following describes the relationship between sensory neurons and motor neurons?

• Motor neurons bring a stimulus input to the brain and sensory neurons carry a movement output.

• Sensory neurons tell motor neurons what to do.

• Sensory neurons bring a stimulius input to the spinal cord or brain and the brain or spinal cord sends a motor neuron response.

• Sensory neurons do more than motor neurons

The primary structural unit of the nervous system is the _____________.

• Axon

• Neuron

• Neuroglia

• Astrocyte

Which is NOT a function of the nervous system?

• gathering information

• responding to a stimulus

• maintaining homeostasis

• secreting hormones

Physical injuries, like a major car accident, can be very dangerous to nervous system health. How?

• the nerves will communicate slower

• pain receptors activate during physical injuries

• damaged nerves cannot send or receive signals

• the driver will be very upset about their destroyed car

Which is the correct nerve impulse pathway?

• dendrite > axon > cell body > synapse > dendrite
• dendrite > cell body > axon > synapse > dendrite
• axon > cell body > dendrite > synapse > axon
• axon > cell body > dendrite > synapse > axon

Which neurotransmitter is involved in the "Fight or Flight" response hat occurs during times of stress?

• Acetylcholine

• Endorphins

• Norepinephrine

• Serotonin

This insulating material forms a layer, around the axon of a neuron.  It enables electrical signals to travel down the axon at higher speeds.

• neuron
• myelin sheath
• dendrite
• neurotransmitter

A chronic, slow-progressing disease of the central nervous system marked by development of thin, demyelinated glial patches called plaques. Symptoms include weakness or numbness in the limbs, unsteady gait, uncoordinated movements and fatigue.

• multiple sclerosis (MS)

• myasthenia gravis

• Reye's syndrome

• amyotrophic lateral sclerosis

A neurological disorder of the central nervous system in which the activity of the neural cells in the brain become disrupted, causing seizures, unusual sensations, repeated twitching of the limbs, and, occasionally, loss of consciousness.

• coma
• dementia
• paraplegia
• epilepsy