Term
| Functions of the Nervous System: |
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Definition
1. Carry sensory information to the brain
2. process sensory information
3. Decision-making
4. control organs and tissues of the body
5. Directs behaviors for maintenance, survival and reproduction |
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| connects the hypothalamus and deep cerebrum, controls emotions and behaviors related to survival and reproduction |
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| natural pathways historically important for humans to reinforce behaviors that lead to food, drink or sex drive |
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Definition
a group of cells that form the brain, spinal cord, nerves, and ganglia of the nervous system
Ex. Supports cells,immunity,provides nutrients, control nerve conditions |
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Definition
| nerve cells that conduct action potentials (nerve impulses) |
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| receives inputs (neuro transmitters) |
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| receives and interprets inputs |
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| delivers action potential (delivers feeling and muscle control) |
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Definition
| astrocytes, microglia,myelinating cells |
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| Electrical signals in neurons: |
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Definition
| nerve impulses=action potentials |
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| excitatory stimuli promote action potentials, inhibitory stimuli prevent action potentials |
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| chemical(ligand) gated channels operated by neurotransmitters |
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| stores high K+ concentrations in the cell and high Na+ concentrations outside the cell |
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Definition
1. Electrical communication
2. fast speed
3. brief message
ex. muscle contractions
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1. chemical communication
2. slow speed- has to travel through blood stream
3. long-lasting message
ex. growth,development of sex organs |
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Definition
1. chemical communication
2. local,fast
3. long-lasting message |
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| occurs only at the node of ranvier |
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Definition
| includes the brain and spinal cord |
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| peripheral nervous system |
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Definition
| spinal nerves, cranial nerves, ganglia |
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Definition
| The nervous system is divided into two major anatomical zones: CNS and PNS |
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| voluntary motor control, sensory perception,memory,thinking, and learning, Largest part of the brain 4/5 of it! |
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| sensory filter to cerebrum, filters out 90%, only 10% gets through |
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| Vital control centers for temperature,appetite,drinking,sex drive |
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| visual and aural coordination,connects information from brain stem to thalamus |
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| Midbrain, pons, medulla oblongata |
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| controls balance,posture,muscle tone |
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| vital control center for breathing, cardiovascular systel |
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| vital control center for breathing, CVS vomit reflex, gag reflex |
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| contains subconscious vital control centers for homeostasis (brainstem) and performs conscious high order functions |
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| control skeletal muscle responses. |
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| controls smooth muscle, cardiac muscle, and glands |
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| neural pathway from sensory receptor to effector |
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| responds to a stimulus by produciong a generator or receptor potential |
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| inherent behaviors that are genetically programmed ex. reproductive behaviors |
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| behavior of an individual is modified by the presence of others because of social context |
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| using stored information to modify behaviors |
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| a form of social learning in which one individual models their behavior after another model individual |
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| an individual learns an association between a behavior and consequence |
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| degenerative disease caused by WSS of myelination of neurons |
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Definition
| degenerative disease caused by loss of neurons and build up of plague |
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Definition
lack of dopamine effects
-feeling good from stimuli
-sex,thirst,appitit, surival reflex |
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