Mc1 lec quiz 2
Help!
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| coordinates all body functions | NERVOUS SYSTEM
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| One of the smallest but most complex | STRUCTURE
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| Brain | 2kg (4.5lbs) or 3% of the total body weight
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| 7 structures | 1. Brain
2. Cranial nerves
3. Spinal cord
4. Spinal nerve
5. Ganglia
6. Enteric plexuses
7. Sensory receptors
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| 100B neurons | Brain
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| 12, follows a defined path and serves a specific region of the body. | Cranial nerves
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| connects through the brain | Spinal cord
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| emerge from the spinal cord | Spinal nerve
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| small masses of nervous tissue, | Ganglia
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| walls of organs of the gastrointestinal tract | Enteric plexuses
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| specialized cells that monitor changes | Sensory receptors
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| 3 functions | 1. Sensory function
2. Integrative function
3. Motor function
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| detect internal stimuli (_____) and external stimuli (_____) | Sensory function
Blood acidity, feeling of warmth
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| Processing of sensory information by analyzing and storing | Integrative function
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| elicit an appropriate motor response | Motor function
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| 2 SUBDIVISIONS OF THE NERVOUS SYSTEM | Central nervous system
Peripheral nervous system
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| brain and spinal cord; source of houghts, emotions, and memories | Central nervous system
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| all nervous tissue outside CNS | Peripheral nervous system
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| 2 functional divisions | Sensory (afferent)
Motor ( efferent )
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