Nervous System Quiz 970 (20 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. The most common neuroglia found in the body are microglia.

Correct Answer: B) False.

2. What are the two major functional subdivisions of the nervous system?

Correct Answer: B) Somatic (voluntary) and autonomic (involuntary).

3. Contains blood vessels that nourish the eye

Correct Answer: C) Choroid.

4. Functions as natural analgesics, decreasing pain perception

Correct Answer: A) Endorphins.

5. A neuron that carries information from the peripheral nervous system to the central nervous system is

Correct Answer: A) Afferent neuron.

6. Damage to the upper motor neurons in the central nervous system can result in which type of gait pattern?

Correct Answer: C) Spastic gait.

7. Why is the sensation of thirst important to maintaining homeostasis?

Correct Answer: A) Water removed by the kidneys must be replaced.

8. What type of neuron processes messages and determines where to send them in your brain.

Correct Answer: B) Interneurons.

9. The postganglionic neurons of the sympathetic nervous system release the neurotransmitter .....

Correct Answer: D) Norepinephrine.

10. The tough, outer membrane that surrounds the brain is called the

Correct Answer: A) Dura mater.

11. Carry messages from the sense organs to the spinal cord

Correct Answer: A) Sensory nerves.

12. Why is the speed of an impulse increased if a neuron is wrapped in myelin?

Correct Answer: C) The impulse can jump from node to node.

13. The following tract carries movement-related information from the brain to the spinal cord:

Correct Answer: A) The cortico-spinal tract.

14. Which part of the eye gives the eye its color?

Correct Answer: B) Iris.

15. The sensory neurons go to ..... which then go to the motor neurons

Correct Answer: D) Interneurons.

16. The chemicals that are used by neurons to transmit messages

Correct Answer: A) Neurotransmitters.

17. What are the "wire" like structures that carry the nerve impulse to and from the brain?

Correct Answer: A) Nerves.

18. If you step on a nail$\rightarrow$ thigh muscle contract$\rightarrow$ lift your foot ..... What nerve brings impulses from foot to spinal cord

Correct Answer: A) Somatic sensory.

19. Different parts of the cerebrum move different body parts.

Correct Answer: A) T.

20. Diskectomy

Correct Answer: D) Excision of an intervertebral disk.