Nervous System Quiz 231 (20 MCQs)

Quiz Instructions

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1. A neuron that connects the central nervous system and a muscle is called:

Correct Answer: A) A motor neuron.

2. This is the largest part of the brain. It controls your voluntary movements, thinking, and decision-making processes.

Correct Answer: C) Cerebrum.

3. If you're in a dark room, what would happen to the size or your pupil?

Correct Answer: A) Dilate to allow more light in.

4. The ..... of the brain controls movement and maintains the balance of the body.

Correct Answer: A) Cerebellum.

5. Hypothalamus is the thermoregulatorycentre of human body.

Correct Answer: A) True.

6. What does a motor neuron do?

Correct Answer: A) Carries signals from teh brain to the organs and other tissues.

7. How is the nervous system related to the muscular system?

Correct Answer: C) By the cerebellum.

8. The ..... consists mainly of nerves that extend from the brain and spinal cord.

Correct Answer: B) Peripheral nervous system.

9. A loud sound, a bright light, and a poke from a sharp pin are all examples of:

Correct Answer: B) Stimuli.

10. During resting potential, the inside of the neuron has a(n) ..... charge compared with the outside of the neuron

Correct Answer: B) Negative.

11. The type of nerve cell that carries information (nerve impulses).

Correct Answer: B) Neuron.

12. During which phase of the action potential is the sodium voltage-gated ion channel closed and the potassium voltage-gated ion channel open?

Correct Answer: C) Repolarization.

13. Interneurons

Correct Answer: C) Increases speed of neuron actions, insulates, protects.

14. Which among the following is NOT a glial cell?

Correct Answer: D) All of the above are glial cells.

15. How do pairs of skeletal muscles work together?

Correct Answer: B) While one muscle in the pair contracts, the other returns to its original length.

16. Motor fibers that activate the sternocleidomastoid and trapezius muscles

Correct Answer: C) Accessory.

17. Nerves can carry signals at 100 meters per second

Correct Answer: A) True.

18. The brain and spine make up the ..... nervous system.

Correct Answer: A) Central.

19. What is located at the back of the eyeball?

Correct Answer: C) Retina.

20. Part of the motor division responsible for conscious or voluntary control of skeletal muscles and reflexes

Correct Answer: B) Somatic division.