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21 Cards in this Set
- Front
- Back
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What is epithelial tissue?
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Tissue that covers the surface of the body and lines internal organs
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What are dendrites?
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extensions of cell bodies of neurons that carry impulses from the environment toward the cell body
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What is action potential? What is it also called?
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Action potential is a reversal of charges across the cell membrane of a neuron. It is also called a nerve impulse.
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What is the meninges? How many layers does it have?
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The meninges is connective tissue in which the brain and spinal cord are wrapped. It has 3 layers.
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What is the thalamus?
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Part of brain that receives messages from sense organs and relays the information to the proper region of the cerebrum for further processing.
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What is connective tissue?
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Tissue that holds organs in place and binds different body parts together
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What is the function of the myelin sheath?
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To insulate the membrane surrounding the axon in neurons.
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What is the threshold?
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The minimum level of a stimulus required to activate a neuron.
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What is the cerebrum responsible for?
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It is responsible for all voluntary activities of the body
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What does the hypothalamus do?
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This acts as a control center for recognition and analysis of hunger, thirst, fatigue, anger, and body temperature
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What is nervous tissue?
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tissue that receives messages from body's external/internal environments, analyzes the data, and directs the response
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What is resting potential?
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Electrical charge across the cell membrane of a resting neuron.
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What is the synapse?
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The location at which a neuron can transfer an impulse to another cell
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What is the function of the cerebellum?
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To coordinate body movements (balance)
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What is a stimulant? What is a depressant?
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A stimulant increases the actions regulated by the nervous system. A depressant decreases the rate of functions regulated by the brain.
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What is muscle tissue?
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Tissue that controls the internal movement of materials in the body, as well as external movement
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What is the cell body? What does it contain?
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The largest part of a typical neuron. It contains the nucleus and much of the cytoplasm
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What are axons?
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Long fibers that carry impulses away from the cell body of a neuron.
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What is the neurotransmitter?
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A chemical used by a neuron to transmit an impulse across a synapse to another cell.
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What does the brain stem connect?
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The brain and the spinal cord
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What is involved in the reflex arc?
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Sensory receptors, sensory neurons, motor neurons, and effectors.
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