Smoking increases the risk of cardiovascular disease. What condition affecting the cardiovascular system occurs when plaque builds up on coronary arteries, causing the blood flow through these arteries to become constricted?

When the removal of an event increases the likelihood of a prior response, _______ has occurred

a. positive reinforcement b. negative reinforcement c. positive punishment d. negative punishment

Which of the following is NOT true of neuron function?

a. At rest, the nerve cell has a slight negative charge across the membrane. b. The action potential is due to positive ions flowing into the neuron. c. The action potential is a switch from negative to positive potential that moves along the axon membrane. d. A stimulus will either "fire" the neuron or it will fail to fire it. e. Nerve cells only use electrical signals to communicate with each other.