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9 Cards in this Set
- Front
- Back
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Arousal system |
Arousal is a physiological and psychological state of being awake or reactive to stimuli. It involves the activation of the reticular activating system in the brain stem, the autonomic nervous system and the endocrine system, leading to increased heart rate and blood pressure and a condition of sensory alertness, mobility and readiness to respond. |
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brain's neurotransmitters |
- acetylcholine - norepinephrine - dopamine - histamine - serotonin |
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ganglia |
a cluster of nerve cell bodies in PNS |
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nuclei |
a cluster of nerve cell bodies in CNS |
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tract |
a bunch of nerbe fibres in CNS |
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nerve |
a bunch of nerve fibres in PNS |
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layers of meninges |
- dura mater - arachnoid mater - subarachnoid space, where CSF is stored - pia mater |
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cerebrospinal fluid (CSF) |
- a clear, colorless body fluid found in the brain and spine - produced in the choroid plexuses of the ventricles of the brain |
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The function of CSF |
- acts as a cushion or buffer for the brain's cortex, providing basic mechanical and immunological protection to the brain inside the skull - cerebral autoregulation of cerebral blood flow 1. Buoyancy 2. Protection 3. Chemical stability 4. Prevention of brain ischemia 5. clearing waste |
