Biopsychology-The nervous system

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  • Central nervous system
    • Spinal cord: Relays information between brain and body allowing brain to monitor  and regulate bodily processes and coordinate voluntary movements
    • Brain
      • Cerebrum
        • Frontal lobe (Speech, thought & learning)
        • temporal lobe (Hearing & memory)
        • Parietal lobe (processing sensory information)
        • Occipital lobe (visual information)
      • Cerebellum (in control of motor skills and balance)
      • Brain stem (breathing &heartbeat)
      • Diencephalon (Thalamus, hypothalamus, links the endocrine system to the nervous system)
    • The Nervous System
      • The peripheral nervous system: consists of all nerves outside of the CNS.
        • Somatic Nervous System: 31 pairs of spinal nerves both sensory and motor. Involved in voluntary reflex actions
        • Autonomic nervous system: regulates involuntary actions such as digestion and heartbeat.
          • Sympathetic nervous system. Prepares body for a fight or flight response: Stored energy is released, pupils dilate, heartbeat increases and sweating increases. Digestion is slowed.
          • Parasympathetic nervous system. Relaxes body once emergency has passed. Heart rate slows and blood pressure reduces.


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