nervous system ii
DESCRIPTION
PP 1016-1024. Nervous System Part II. NERVOUS SYSTEM II. TYPES OF NEURONS. sensory – sense organs/receptors to CNS. motor – carry information from CNS to muscles and glands interneurons – connect sensory and motor and carry impulses between them. NERVE IMPULSES. An electrical impulse - PowerPoint PPT PresentationTRANSCRIPT
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PP 1016-1024
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sensory – sense organs/receptors to CNS.
motor – carry information from CNS to muscles and glands
interneurons – connect sensory and motor and carry impulses between them.
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An electrical impulse Resting potential: inactive due to
“negatively” charged inside as compared to impulse
Action potential: helps the transmission of an electrical impulse by making inside more “positive”
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When the impulse reaches terminal neurotransmitters are released into synaptic cleft
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Drug: chemical compound that affects the body
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Prevent re-uptake of neurotransmitters
Over stimulation of nervous system
Mimicking neurotransmitters
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Neuron that detects stimuli.
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Detect pressure and movementSense: Hearing and touch
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Detect temperature
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Detect tissue damage
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Respond to chemicalsSense: Smell and taste
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Respond to variation in light
Sense: sight