PSY. 101 CH. 2 – Flashcards
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GABA functions as ________.
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an inhibitory neurotransmitter in the brain
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Since Norma is a split-brain patient, we can infer that she likely has a history of ________.
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severe epilepsy
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The thick band of neurons that connects the right and left cerebral hemispheres is called the ________.
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corpus callosum
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The branchlike structures that receive messages from other neurons are called ________
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dendrites
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Pain-controlling chemicals in the body are called ________.
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endorphins
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The outermost part of the brain that is made up of tightly packed neurons and is only a tenth of an inch thick is called the ________.
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cortex
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Involuntary muscles are controlled by the ________ nervous system.
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autonomic
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Curare, a poison, works by ________.
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blocking receptor sites and acting as an antagonist for acetylcholine
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The charge that a neuron at rest maintains is due to the presence of a high number of ________ charged ions inside the neuron's membrane.
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negatively
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After a head injury a person reports that she is unable to see, although her eyes are uninjured. A doctor would suspect an injury in the ________ lobe.
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occipital
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Endocrine glands ________.
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secrete hormones directly into the bloodstream
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"All or none" is the principle stating that ________.
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a neuron either fires or does not fire
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The branch of the autonomic nervous system that restores the body to normal functioning after arousal and is responsible for day-to-day functioning of the organs and glands is called the ________.
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parasympathetic nervous system
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What is the function of myelin?
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to speed up the neural impulse
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Eating, drinking, sexual behavior, sleeping, and temperature control are most strongly influenced by the ________.
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hypothalamus
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Neurons that carry information from the senses to the spinal cord are called ________.
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sensory neurons
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The ________ is a structure in the brain stem responsible for life-sustaining functions, such as breathing and heart rate.
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medulla
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If you have a problem remembering things that happened a year ago, doctors might check for damage to the ________ area of the brain.
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hippocampus
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How is acetylcholine removed from the synapse?
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It is broken down by an enzyme
