Plant and Animal Physiology Quiz - Nervous System Correct Answers are bold and underlined 1. A man was admitted to the hospital suffering from abnormally low body temperature, loss of appetite, and extreme thirst. A brain scan showed a tumor located in the hypothalamus corpus callosum cerebellum right cerebral hemisphere pons 4. A stimulus triggers an action potential by causing sodium ions to enter the neuron .
Anesthetics block pain by blocking the transmission of nerve signals.