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