Nervous System Quiz 693 (20 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. An action potential will occur if threshold is reached, which is-55 to-60 mV.

Correct Answer: A) True.

2. The gap between neuron is called

Correct Answer: A) Synaptic cleft.

3. The outer layer of the cerebrum and consists of gray matter

Correct Answer: A) Cerebral cortex.

4. According to function a sensory neuron would

Correct Answer: B) Carry Impulses from skin and organs to the spinal cord and brain about the external and internal environment.

5. What type of glial cells support nerves in the central nervous system

Correct Answer: B) Oligodendrocytes.

6. Central nervous system consists of

Correct Answer: A) Brain and spinal cord.

7. Starting with cells, the fourth level of organization is .....

Correct Answer: B) Organ systems.

8. The four lobes of the brain make up the:

Correct Answer: C) Cerebrum.

9. Eye condition is an infection of the eyelid and cornea, commonly called pink eye.

Correct Answer: A) Conjunctivitis.

10. What is sensory Nerve

Correct Answer: C) Carry messages from receptor to the brain.

11. The impulse of a neuron

Correct Answer: D) Changes only in frequency based on the stimulus.

12. The primary passageway of air

Correct Answer: A) Nose.

13. Push my hand

Correct Answer: C) Push my hand.

14. A(n) ..... diffuses across a narrow synaptic cleft between the presynaptic axon and the postsynaptic cell to transmit a nerve impulse.

Correct Answer: A) Neurotransmitter.

15. Impulses going to your arms telling them to move travel along

Correct Answer: B) Motor neurons.

16. What are the two parts of the nervous system called?

Correct Answer: A) Central and peripheral.

17. What is the link between the body and brain for communication?

Correct Answer: B) Spinal cord.

18. What is a place where two or more bones meet?

Correct Answer: B) Joint.

19. ..... are the structural units of the nervous system.

Correct Answer: C) Neurons.

20. What is the name of the chemical messenger of a neuron?

Correct Answer: B) Neurotransmitters.