Nervous System Quiz 89 (20 MCQs)

Quiz Instructions

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1. What do you call the nerve fibers that carry impulses to the cell body?

Correct Answer: B) Dendrites.

2. How many lobes is the largest part of the brain made of?

Correct Answer: D) 4.

3. Numbers 2/4

Correct Answer: B) Diencephalon.

4. The axon/synaptic terminals of a neuron .....

Correct Answer: D) Allow for the secretion of neurotransmitters to target cells.

5. Forms the myelin sheaths in the peripheral nervous system.

Correct Answer: D) Schwann cells.

6. In the CNS myelin is formed by .....

Correct Answer: B) Oligodendrocytes.

7. FH

Correct Answer: A) Family history.

8. Which is a characteristic of the sympathetic division in the autonomic system?

Correct Answer: A) Dilates bronchi.

9. How many neurons does the brain contain?

Correct Answer: D) ~100 billion.

10. * Activates and prepares the body for action such as vigorous muscular activity.

Correct Answer: A) Sympathetic Nervous System.

11. Insulating axon fibers which increase rate of neural impulse transmisison

Correct Answer: C) Myelin Sheath.

12. The chemicals that are released into the space between neurons.

Correct Answer: B) Neurotransmitters.

13. The functional component of abducens nerve is:

Correct Answer: A) General somatic efferent.

14. Which of the following would operate the triceps muscle while exercising?

Correct Answer: C) Somatic motor neuron.

15. Poliomyelitis

Correct Answer: A) Inflammation of the gray matter of the spinal cord.

16. What type of neuroglial cell is found in the CNS and phagocytes bacteria and cellular debris?

Correct Answer: A) Microglial.

17. Glial cell type in the PNS that provides support for neurons in the ganglia.

Correct Answer: A) Satellite Cell.

18. If nerves appear white, they are covered with what fatty material?

Correct Answer: A) Myelin.

19. The area of the brain most associated with coordination and balance is the:

Correct Answer: A) Cerebellum.

20. By the age of five, a child's brain reaches ..... % of its full weight.

Correct Answer: C) 90%.