Nervous System Quiz 654 (20 MCQs)

Quiz Instructions

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1. Neurons are..... origin.

Correct Answer: C) Ectodermal.

2. This system controls all automatic, essential life functions

Correct Answer: B) Autonomic nervous system.

3. Which component of the peripheral nervous system is responsible for regulating involuntary bodily functions such as heart rate and digestion?

Correct Answer: A) Autonomic nervous system.

4. The ..... nervous system dominates control of visceral organs under normal, everyday conditions.

Correct Answer: A) Parasympathetic.

5. What are the two ions transported across the membrane in an action potential?

Correct Answer: B) K+ and Na+.

6. THE BRAIN NEEDS A CONTINUOUS SUPPLY OF BLOOD AND

Correct Answer: B) OXYGEN.

7. Indicate who first defined analyzers:

Correct Answer: C) I.P. Pavlov.

8. Main function:to process information received through the sensory systems and other parts of the body and to activate appropriate actions.

Correct Answer: A) Central Nervous System.

9. Voluntary muscles perform essential activities in your body, such as keeping your heart beating and helping with digestion.

Correct Answer: B) False.

10. Cell body

Correct Answer: C) Largest part of a typical neuron; contains the nucleus and much of the cytoplasm.

11. *In which of the following would the motor units have the greatest number of muscle fibers?

Correct Answer: D) *postural muscles of the back.

12. The relative refractory period is a period during the generation of an action potential during which .....

Correct Answer: D) Only an abnormally large stimulus will create an action potential.

13. Nerve supply to jaw occur by which nerve:

Correct Answer: B) Maxillary nerve.

14. Which type of CNS neuroglial cells produce cerebrospinal fluid to cushion the brain and spinal cord?

Correct Answer: C) Ependymal cells.

15. How many nerve cells are there in the body?

Correct Answer: B) Billions.

16. Chemical that causes the blood vessels around the infection to dilate (expand) so that more blood can flow to the infection

Correct Answer: D) Histamines.

17. From wrist to fingertip, what is the order of bones?

Correct Answer: A) Carpals, metacarpals, phalanges.

18. An adult has about ..... bones

Correct Answer: B) 206.

19. Ear drum.

Correct Answer: C) Tympanic Membrane.

20. What are the main parts central system?

Correct Answer: D) All of the above.