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19 Cards in this Set
- Front
- Back
What are the two types of nervous systems?
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Peripheral and Central
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Under the peripheral nervous system, what are the two headings?
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Automatic and somatic.
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What does somatic mean? which side of the nervous system is it?
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Voluntary movement, peripheral
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What are the two reactions under automatic nervous systems? what does each do?
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Sympathetic (fight or flight, used in emergencies, dilated eyes+increased blood flow+increased heart contractions, etc) and parasympathetic (returning to homeostasis, constricting pupils+decreased heart contractions and blood flow)
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Which two organs make up the Central nervous system?
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Brain and spinal cord
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Which area of the peripheral nervous system controls reflex arcs?
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The somatic side which is decided between motor and sensory, creating the arc.
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what is a nueron?
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A functional unit of the nervous system. It is a single nerve cell.
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What are the three types of neurons?
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Motor, sensory, inter
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What do sensory neurons do?
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Brings messages from environment to the spinal cord.
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What do motor neurons do?
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Take messages to the effectors (from spinal cord to body)
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what do inter neurons do?
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Connect motor neurons and sensory neurons in the spinal cord
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What are nerves? what are the three kind?
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Nerves are a bundle of neurons. 1) motor ( carry motor neurons) 2) sensory (carry sensory neurons) 3) mixed nerves ( carry both motor and sensory neurons)
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What is automatic broken into?
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Sympathetic and parasympathetic
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Where does the reflex arc occur?
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Between the neurons of the somatic side of the peripheral nervous system.
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What is the difference between sympathetic and parasympathetic??
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Sympathetic is fight or flight (used in emergencies) eg: dilated pupils, increased blood flow etc. Parasympathetic is returning to homeostasis (constriction of pupils, decrease heart rate etc)
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What makes up the central nervous system (CNS)?
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Brain and spinal cord
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What is a neuron?
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A single nerve cell. It is the functional unit of the nervous system.
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What are the 3 types of neurons?
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Motor (takes messages to effectors), Sensory (brings message to spinal cord, and inter neuron (connects motor and sensory)
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What are nerves?
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A bundle of neurons.
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