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What are the principle parts of the Nervous System?
The central nervous system and the peripheral nervous system.
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What are the components of the CNS?
The brain and the spinal cord.
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What are the functions of the CNS?
Receives, processes and transfers voluntary and involuntary information.
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What are the components of the PNS?
Nerves outside the CNS.
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What is the function of sensory neurons?
Carry information toward the CNS.
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What is the function of motor neurons?
Carry information away from CNS to muscles, glands, etc.
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Where does love originate?
The brain.
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How fast can a nerve impulse travel?
Up to 250 mph.
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What types of neurons are there?
Sensory, interneurons, and motor neurons.
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What are Neuroglial cells?
Cells specialized for support and protection of neurons.
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What is the function of myelin sheath in the PNS?
Saves the neuron energy, speeds up the transmission of impulses, helps damanged or severed axons regenerate.
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What is a Scwann cell?
A type of neuroglial cell.
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What is the myelin in the CNS formed by?
Oligodendrocytes
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What happens in depolarization?
Sodium (Na) moves into the axon.
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What happens in repolarization?
Potassium moves out of the axon.
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Which of the following stages of an action potential is characterized by the rapid influx of Na ions into cytoplasm of the neuron?
Depolarization
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What are the effects of neurotransmitter?
Excitatory and inhibitory.
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What types of nerves are there?
Cranial and spinal nerves.
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What is the function of the hindbrain?
Coordinates basic, automatic vital functions.
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What is the function of the medulla oblongata?
Controls automatic functions of internal organs.
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What is the function of the cerebellum?
Coordinates basic movements.
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What is the funtion of the pons?
Aids flow of information.
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What is the function of the midbrain?
Coordinates muscle related to vision and hearing.
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What is the function of the forebrain?
Receives and intergrates into concerning emotions and conscious thought.
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What is the function of the hypothalamus?
Helps regulate homeostasis.
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What is the function of the thalamus?
Receiving, processing, and transfer center.
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What is the function of the limbic system?
Neuronal pathways involved in emotions and memory.
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What is the function of cerebrum and cerebral cortex?
Higher functions (math formulas).
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What is short term memory?
Working memory, information from previous hours.
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Where is short term memory?
Limbic system.
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What is long term memory?
Information from previous days to years.
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Where is long term memory stored?
Cerebral cortex
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What happens in stage 1 of sleep?
Transitional, random small waves on EEG.
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What happens in stage 2 of sleep?
Skeletal muscles relax, little eye or body movement, EEG shows sleep spindles.
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What happens in stage 3 of sleep?
Heart and respiration slower. EEG shows slow wave sleep.
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What happens in stage 4 of sleep?
Difficult to awaken, heart and respiration slowest, body temperature decreased.
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What happens in REM sleep?
Dreaming, EEG same as awake.
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