Nervous System Quiz 918 (20 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. What is the effect of inhibitory neurotransmitters on the postsynaptic membrane?

Correct Answer: B) Hyperpolarization.

2. Muscles are connected to bones by an elastic-like (stretchy) strap called a .....

Correct Answer: C) Tendon.

3. What is the primary role of the nervous system in the body?

Correct Answer: B) To serve as the master control center.

4. Holds nerve fibers together, and, more important, produces the myelin sheath around axons in the CNS.

Correct Answer: C) Oligodendroglia.

5. A stimulus that changes a postsynaptic neuron's membrane from resting potential to-85 mV is a(n) ..... stimulus.

Correct Answer: A) Inhibitory.

6. Pierre Flourens discovered that different areas of the brain were responsible for different functions by:

Correct Answer: A) Localising areas of pigeons' and rabbits' brains and studying the effects.

7. Which part of the brain controls feelings, personality, and complex thought?

Correct Answer: B) Frontal Lobe.

8. How many sense organs do we have?

Correct Answer: A) 5.

9. The protective myelin covering of axons of the peripheral nervous system are made by the

Correct Answer: B) Schwann cells.

10. What three primary colors of light are detected by your cones?

Correct Answer: A) Green, red, and blue.

11. This cell is found in the CNS, is spider-like in appearance, and is phagocytic.

Correct Answer: D) Microglia cell.

12. In a neuron, impulses move

Correct Answer: A) From dendrite to axon.

13. What condition results if the cornea and lens focus the image behind the retina?

Correct Answer: B) Hyperopia.

14. Which of these is NOT a response of the sympathetic nervous system?

Correct Answer: A) Sweat glands release less.

15. What do you rely on to help you experience the world around you and to keep you safe?

Correct Answer: C) Senses.

16. Which part of the eye holds the lens in place?

Correct Answer: B) Ciliary muscles.

17. During a relative refractory period:

Correct Answer: D) The action potential can be initiated with a strong stimulus.

18. What does a sensory neuron do?

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

19. What is found in the ear that converts mechanical (sound) stimuli into a nerve impulse?

Correct Answer: A) Receptor cells.

20. Which 2 senses use chemicals to interpret information?

Correct Answer: A) Taste and smell.