You may need to conduct your own research to answer the following questions.

Extension Question 1

• Name three types of receptors found in skin.

• What other sensations do somatic sensory neurons detect elsewhere in the body?

Extension Question 2

• Describe three changes that take place in the body when the sympathetic nervous system is dominant.

• Describe three changes that take place in the body when the parasympathetic nervous system is dominant.

Extension Question 3

• What other types of cells make up the nervous system in addition to neurons?

• How do these cells differ from neurons?

• What is the general function of these cells?