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CH 8 Nervous System (Changes in membrane potential (Graded potential
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CH 8 Nervous System
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8.2 Neurons & Neuroglia
General Structure of Neuron
- Cell body (Grey matter)
- dendrites
- axon (white matter)
- synaptic terminal
Structural Classification
- Multipolar neuron
two or more dentrites & axon
- Unipolar neuron
one dentrite & axon cell body off to side
- Bipolar neurons
dendrtie & one axon cell body between them
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Kahoot
8.4-8.4
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Which of the following lists the part of a reflex arc in the correct order: receptor sensory neuron interneuron motor neuron and effector
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axons crossing from one side of the spinal cord
to the other within the gray matter are found in the gray commissures
the white matter of the spinal cord contains bundles of axons that share common origins destinations and functions
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8.1-8.3
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The part of the peripheral nervous system
that brings information to the central nervous system
is the afferent division
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The cytoplasmic extensions that together with the
cell body provide the main receptive
surfaces for neurons are the dendrites
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The myelin sheaths that surround the axons of some
of the neurons in the CNS are formed by oligodendrocytes
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The polarization of a nerve fiber refers to having the potassium ions inside the cell and sodium outside the cell
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The all-or-none principle states that all stimuli great enough to bring the membrane to threshold will produce identical action potentials