Front | Back |
Iliopsoas muscle
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Iliacus + psoas muscle = iliopsoas muscle
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Nervous System
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-control and adjusts activities of other systems of the body -chemical communication with targeted tissue -response is quick and brief -response disappears quickly -response modifies activities of other systems
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Nervous system vs. endocrine system
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Nervous System -fast response, disappears quicklyEndocrine System -slow response, extended response
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Central Nervous System (CNS)
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-brain and spinal cord-functions: -processing -integration -coordinating sensory data and motor commands -higher function
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Peripheral Nervous System (PNS)
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-neural tissue outside of CNS-functions: -sensory information to CNS -motor information from CNS -sensory=afferent -motor=efferent
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Neuron
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-cell body and all of its processes
-dendrites, cell
body, axon, synaptic terminals
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Cell body
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Soma
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Perikaryon
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Cytoplasm surrounding nucleus
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Free ribosomes
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Nissl bodies
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Axon
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Nerve fiber
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Axon hillock
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Connects initial segment of axon with cell body axoplasm
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Types of neurons
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1. bipolar neuron2. unipolar neuron3. multipolar neuron
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Bipolar neuron
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Very few in the body (special senses such as hearing, vision, and balance)
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Unipolar neuron
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Sensory cells that are found in what is known as the dorsal root ganglion
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Multipolar neuron
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Most common
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