Nervous System Quiz 48 (20 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. These carry impulses toward the neuron's cell body

Correct Answer: B) Dendrites.

2. To minimize trauma, a spinal tap is properly done at the level of .....

Correct Answer: D) Oh.

3. The fatty material that coats some axons and speeds nerve impulse conduction is called .....

Correct Answer: B) Myelin.

4. Connects the left and right hemispheres of the brain (women have a larger one than men which helps with multitasking)

Correct Answer: D) Corpus Callosum.

5. What is a neuron?

Correct Answer: A) Cell responsible for detecting stimuli and sending them to the brain.

6. What is the electrical signal that travels through a neuron called?

Correct Answer: D) Action potential.

7. Which part of the brain controls involuntary actions?

Correct Answer: C) Brain stem.

8. The action potential describes the ..... component of electrochemical signaling

Correct Answer: A) Electrical.

9. Cerebrospinal Fluid is secreted by specialized capillaries found here.

Correct Answer: B) Pia Mater.

10. The hearing system determines where a sound comes from by

Correct Answer: C) By how much sound waves enter each ear.

11. Controls skeletal muscles

Correct Answer: A) Somatic.

12. Gaps in the myelin sheath are called .....

Correct Answer: A) Nodes of Ranvier.

13. This part of the nervous system regulates voluntary actions such as running and jumping

Correct Answer: C) Somatic Nervous System.

14. Continuous with the brain stem; connects the brain to nerves

Correct Answer: A) Spinal cord.

15. The lobe in charge of balance and coordination

Correct Answer: B) That is not a LOBE, it is the cerebellum.

16. Action potentials are always propagated along an axon at the same ..... but ..... can vary depending on the strength of the stimulus.

Correct Answer: B) Amplitude; frequency.

17. Which type of nervous system is in charge of voluntary actions (things that are under your control)?

Correct Answer: D) Somatic nervous system.

18. What is #6 in the diagram?

Correct Answer: C) Postsynaptic receptor.

19. The nerve impulse travels from dendrite $\rightarrow$ cell body $\rightarrow$ axon.

Correct Answer: A) True.

20. The buildup of depolarization when EPSPs arrive at several places on the neuron is called ..... summation.

Correct Answer: A) Spatial.