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28 Cards in this Set
- Front
- Back
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Sensory input |
The conduction of signals from sensory receptors to integration centers of the nervous system |
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Integration |
A process by which information from sensory receptors is interpreted and associated with appropriate responses of the body |
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Motor output |
The conduction of signals from the processing center to e ector cells that actually carry out the body's response to stimuli |
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CNS Central nevous system |
-composed of brain and spinal cord -responsible for integration of sensory input and associating stimuli with appropriate motor output |
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PNS Peripheral nervous system |
-consists of the network of nerves extending into different parts of the body -carry sensory input to the CNS and motor output away from the CNS |
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Dendrites |
Convey signals to the cell body Are short, bymerous, and extensively branched |
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Axons |
Conduct impulses away from the cell body Are long, single processes |
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Synapse |
Is a gap between a synaptic terminal and a target cell |
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Neurotransmitters |
Are chemicals that cross the synapse to relay the impulse |
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Sensory neurons |
Convey information about the external and internal enviroment from sensory receptors to the central nervous system |
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Interneurons |
Integrate sensory input and motor output |
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Motor neurons |
Convey impulses from the CNS to effector cells |
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Supporting cells |
Provide structural reinforcement as well as protect ,insulate and assist the neuron |
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Glial cells |
Support cells of the CNS |
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Actrocytes |
Encircle capillaries in the brain |
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Oligodendrocytes |
Form myelin sheaths that insulate nerve processes |
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Schwann cells |
Are the supporting cells in the PNS And form the insulting myelin sheath around axons |
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Resting potential |
Membrane potential of an excitable cell at rest |
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Action potential |
Is the rapid change in the membrane potential of an excitable cell, caused by stimulus - triggered selective opening and closing of voltage - gated ion channels |
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Hindbrain |
The oldest part of the brain |
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Medulla oblongata and pons |
Control primitive visceral functions like breathing, heart, blood vessel activity, swallowing, vomiting, digestion, and coordinates body movements like walking |
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Cerebellum |
Functions in balance and coordination of movement |
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Colliculi |
Are areas of the mid brain that function in the visual and auditory systems |
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Reticular formation |
Regulates states of arousal |
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Forebrain |
Contains sensory and motor pathways and integrating centers involved with patterns and image formation |
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Thalamus |
Relays sensory information to the cerebrum |
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Hypothalumus |
Regulator of homeostasis Body's theromostat, hunger, thirst Sexual response matinf, fight or flight and pleasure |
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Corpus callosum |
Transfers info between the left and right hemispheres of the brain |
