Psyc Test 2 - Chapter 2 Endorphins Released in response to...

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Chapter 2 Endorphins – Released in response to pain, stress or physical exertion, Reduce pain and produces pleasure. Related drugs: Morphine (mimics endorphins), Heroin (agonists) Serotonin – Regulates sleep, appetite, mood, pain, Related to problems like depression, alcoholism, impulsivity and aggression. Types of message sent through and between neurons Action Potential – Electrical impulses that passes through axon, causes the release of chemicals from terminal buttons. All-or-None Law – Neurons either fires (AP occurs) or doesn’t. A strong fast stimulus or weak/slow stimulus. Types of Neurons – Sensory – from sense receptors to CNS (takes in) Motor – from CNS to muscles and glands (sends out) Interneuron – from neuron to neuron Myelin Sheath – Protective coating that surrounds axon, speeds transmission of message. Multiple Sclerosis is not having enough. CNS – Brain and Spinal Cord Peripheral NS – All neurons going to and from CNS Autonomic NS – Controls automatic functions, internal organs and glands.
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