Computer programs called _____ systems are designed to carry out specialized tasks in a limited domain, such as helping physicians diagnose blood diseases

People with bulimia have occasional periods when they excessively do what?

a. Cry b. Exercise c. Eat d. Talk

When a vertebrate animal contracts the flexor muscles of a leg, it relaxes the extensor muscles of the same leg. Sherrington considered this evidence for the existence of ____

a. spatial summation b. temporal summation c. inhibitory messages d. the delay in transmission at synapses