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28 Cards in this Set
- Front
- Back
What are the 2 main parts of Nervous System?
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1) CNS
2) PNS |
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PNS is divided into what 2 systems/divisions?
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1) Sensory division (afferent)
2) Motor division (efferent) |
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Define:
Sensory Division |
You're taking in info
& it's going towards CNS (brain & Spinal cord)=afferent signal |
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Define:
Motor Division |
(Info is going)
Away from brain/spinal cord; Carries signal from CNS to gland & muscle cells that carry out the body's responses. Ex: Writing notes now |
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What is
Visceral Sensory Division? |
Internal you have no control; Carries signals mainly from the viscera of the thoracic & abdominal abdominal cavities, such as the heart, lungs, stomach, & urinary bladder
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What is
Somatic Sensory Division? |
Carries signals from receptors in the skin, muscles, bones, & joints
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What are the 2 divisions of
Visceral Motor Division? |
1) Sympathetic Division
2) Parasympathetic Division |
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Define:
Sympathetic division? |
Fight/flight response
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What is Parasympathetic division?
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Normal day to day
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What are the 3 general classes of neurons / "Nervous System Mantra"
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1) Sensory (afferent) neurons
2) Interneurons 3) Motor (efferent) neurons |
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Describe:
Sensory (afferent) neurons? |
Take info ; stimuli
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Describe:
Interneurons? |
Incorporate info ; process stimulus
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Describe:
Motor neurons? |
Response ; respond
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What are the 3 Properties of Neurons? (Which enables them to communicate with other cells)
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1) Excitable
2) Conductive 3) Secretory |
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Describe
(Property of Neuron's) property: Excitable |
These cells respond to stimuli
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Describe
(Property of Neuron's Property: Conductive)? |
(Electricity)
able to send out signal & activate other cells |
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Describe
(Property of Neuron's Property: Secretory)? |
Releasing neurotransmitter or some type of electrical signal, (causing a response to the body)
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Describe the structure of a neuron (name at least 5 parts)
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1) soma
2) nucleus 3) processes of cell neuron: -dendrites -axon -axon hillock |
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Define:
Soma |
Cell body of neuron
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Define by function:
dendrites |
take in info
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Define by function:
Axon |
send/release out info
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Define by function:
Axon hillock |
part where neuron start to form axon
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Define:
Axonal transport? |
The two-way passage of proteins, organelles, & other materials along an axon.
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Define:
Anterograde transport |
Movement away from the soma down the axon
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Define:
Retrograde transport |
Movement up the axon toward the soma
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What are the 2 types of axonal transport?
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1) Fast axonal transport
2) Slow axonal transport |
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What are the 2 types of Fast Axonal Transport?
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1) Anterograde axonal transport
2) Retrograde axonal transport |
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Define:
Somatic Motor Division? |
Carries signals to the skeletal muscles. This output produces muscular contractions that are under voluntary control, as well as involuntary muscle contractions called "somatic reflexes"
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