Letters on an electronic sign are made of separate, unconnected points. What explains our ability to read the words on these signs?

A wide variety of stressful events have been found to ________ the functioning of the immune system and make people ________ susceptible to disease

a) heighten; more b) heighten; less c) suppress; more d) suppress; less

Regarding neurons, which of the following statements is FALSE?

a. Neurons carry information from the senses to the brain and also activate muscles and glands. b. When neurons form vast networks, they produce intelligence and consciousness. c. The axons are the tree-root like parts of neurons that are specially designed to receive the messages from other neurons. d. No two neurons are exactly alike, but most have four basic parts: dendrites, soma, axon, and axon terminal.