Nervous System Quiz 373 (20 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. Which side of the cell membrane has more potassium ions wen the neuron is at rest? And then in depolarization?

Correct Answer: B) Inside; inside.

2. The ..... make(s) up the peripheral nervous system.

Correct Answer: B) Nerves.

3. The outer layer around neurons that allows them to be transmitted quickly and efficiently is

Correct Answer: A) Myelin sheath.

4. Why reflex actions are important in the body?

Correct Answer: A) To protect the body from damage.

5. Which statement is correct when looking at bright light or looking at nearby objects?

Correct Answer: C) The pupil narrows. Ciliary muscles shrink. The lens becomes clear and round.

6. Which part of the brain controls muscles and balance?

Correct Answer: A) Cerebellum.

7. What are the smallest parts of living organisms?

Correct Answer: A) Cells.

8. Which layer is a blood vessel-rich layer with a dark brown membrane?

Correct Answer: A) Choroid.

9. The Spinal nerves arise from spinal cord and they are .....

Correct Answer: D) 31Pirs.

10. Branch-like; receives impulses

Correct Answer: D) Dendrites.

11. -al

Correct Answer: C) Pertaining to.

12. The color of visible light is determined by the .....

Correct Answer: C) Wavelength.

13. Which of the following is classified as the fore brain?

Correct Answer: D) Cerebrum, Olfactory region, Hypothalamus.

14. A control system that uses information from sensors to increase the rate of processes.

Correct Answer: A) Positive Feedback Mechanism.

15. How many properties are shown by nerve cells:-contractibility-conductivity-extensibility-elasticity-all or none

Correct Answer: A) 2.

16. Controls voluntary movement, reasoning, memory, planning

Correct Answer: A) Frontal.

17. Neural impulses, also called ....., carry electrical signals through the axon.

Correct Answer: B) Action potential.

18. Which structure of the brain, responsible for intelligence, language, memory, and consciousness, forms the outer 'wrinkled' layer of the brain?

Correct Answer: A) Cerebral cortex.

19. At resting membrane potential, neurons have more (a) on the outside of the cell membrane.

Correct Answer: A) And Na+.

20. The membrane that surrounds an entire nerve is the:

Correct Answer: B) Epineurium.