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Chapter 3~ Biological Basis of Behavior

Autonomic Nervous System part of the PNS that controls the glands and the muscles of the internal organs (such as the heart)
Behavioral Genetics the study of the relative power and limits of genetic and environmental influences on behavior
Central Nervous System (CNS) the brain and spinal cord
Computed Tomography (CT) a series of X-ray photographs taken from different angles and combined by computer into a composite representation of a slice through a body
Interneurons neurons within the brain and spinal cord that communicate internally and intervene between sensory inputs and motor outputs
Limbic System doughnut shaped neural system (consists of the amygdala, hippocampus, and hypothalamus) located below the cerebral hemispheres; associated with emotions and drives
Magnetic Resonance Imaging (MRI) a technique that uses magnetic fields and radio waves to produce computer-generated images of soft tissue; show brain anatomy
Medulla the base of the brain stem; controls heartbeat and breathing
Parasympathetic Nervous System division of the autonomic nervous system that calms the body, conserving its energy
Peripheral Nervous System (PNS) the sensory and motor neurons that connect the central nervous system to the rest of the body
Positron Emission Tomography (PET) a visual display of brain activity that detects where a radioactive form of glucose goes while the brain performs a given task
Reticular Formation a nerve network in the brain stem that plays an important role in controlling arousal
Somatic Nervous System the division of the PNS that controls the body's skeletal muscles
Sympathetic Nervous System the division of the autonomic nervous system that arouses the body, mobilizing its energy in stressful situations
Thalamus brain's sensory switchboard, located on top of the brain stem; directs messages to the sensory receiving areas in the cortex and transmits replies to the cerebellum and medulla
Wernicke's Area controls language reception- a brain area involved in language comprehension and expression; usually in the left temporal lobe
Parietal Lobes portion of the cerebral cortex lying at the top of the head and toward the ear; receives sensory input for touch and body position
Electroencephalogram (EEG) an amplified recording of the waves of electrical activity that sweep across the brain's surface; measured by electrodes placed on scalp
Functional MRI (fMRI) a technique for revealing blood flow and, therefore, brain activity by comparing successive MRI scans; shows brain function
Created by: rd117084