Nervous Tissue & Brain Quiz

1. Most of the nerve cells in the nervous system are

• neurons
• neuroglia

2. Which of the following divisions of the nervous system are INCORRECTLY matched with their function?

• Sensory division- sends impulses from senses to brain
• Parasympathetic division- controls digestion and urination
• Efferent division- sends impulses from PNS to CNS
• Autonomic division- controls involuntary muscles
• Somatic division- controls fight or flight response

4. When an impulse reaches the end of a neuron, what is released to carry the action potential to the next neuron?

• Calcium ions
• Sodium ions
• Potassium ions
• Neurotransmitters

5. A neuron begins with an internal ___________ charge, but when an action potential arrives, it becomes ______________ charged.

• negative, positive
• positive, negative
• neutral, positive
• neutral, negative

6. From superficial to deep, what are the three layers of meninges?

• arachnoid, dura mater, pia mater
• pia mater, arachnoid, dura mater
• dura mater, arachnoid, pia mater
• dura mater, pia mater, arachnoid

7. Name the ventricles of the brain.

9. A reflex arc has 5 components: a ______________, sensory neurons, integration, ____________ neurons, and an _____________.

c

d

e

f

b

a

Axon

dendrites

soma cell

myelin sheath

Node of Raniver

synapse