You are called for an elderly man with chest pain but you have difficulty understanding him. His wife tells you that he has Bell's palsy which causes paralysis of facial nerves. This is an example of:

A refractometer uses all of the following EXCEPT ________ to measure the concentration level of the specimen

a. light b. chemicals c. a prism d. a calibrated scale

For a person to make a fist, which of the following must occur?

a. The central nervous system must send a message through the spinal cord and then through the peripheral nerves. b. The central nervous system must send a message through the spinal cord and then through the autonomic nervous system. c. The peripheral nervous system must send a message to the brain and then back through the peripheral nervous system. d. The muscles must signal the brain to send a message through the autonomic nervous system.