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Week 3 Tuesday Notes

by: Yessenia Figueroa

Week 3 Tuesday Notes psych 1100

Yessenia Figueroa

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About this Document

These are very thorough notes of this weeks discussion
Introduction to Psychology
Andre Plate
Class Notes
Intro to Psychology
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This 3 page Class Notes was uploaded by Yessenia Figueroa on Wednesday September 14, 2016. The Class Notes belongs to psych 1100 at Ohio State University taught by Andre Plate in Fall 2016. Since its upload, it has received 4 views. For similar materials see Introduction to Psychology in Psychology at Ohio State University.


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Date Created: 09/14/16
Vocabulary:    Neurotransmitters­​ chemicals that transmit information across the synapse to a receiving  neuron’s dendrites    Receptors­​ channel in neurons membrane that interact with neurotransmitters    The neurotransmitter and the receptor site act like a lock and key system (only neurotransmitter  with right shape can fit)    Excitation​­ moves cell closer to threshold (increases likelihood of action potential) (depolarizes  neuron)    Summation​­ The mixed signals come, so the neuron receives the most reoccurring message  and makes a decision    Reuptake​­ process where neurotransmitter molecules in the synaptic gap return to the axon  terminal from which they were released    Acetylcholine    ­found in neuromuscular junction involved in voluntary motor control  ­activates muscles to initiate motor movements  ­related to memory and learning  ­connected to Alzheimer's and Botox    Norepinephrine    ­arousal, alertness, and vigilance  ­increase your heart­rate to prepare for action  ­connected to PTSD and Bipolar disorder    Dopamine    ­reward, movement, and planning  ­addiction, drug, and alcohol use  ­connected to Parkinson’s disease and Schizophrenia    Serotonin  ­Sleep, appetite, and mood  ­connected to depression  ­anti­depressants block reuptake of serotonin    Endorphins    ­AKA endogenous morphine  ­body’s natural response to pain  ­connected to runner’s high, opioid drugs, morphine, Oxycontin, and Heroin    Peripheral nervous system    ­connects the central nervous system to the body’s organs and muscles  ­divided into the Somatic and Autonomic systems    Somatic  ­ voluntary set of nerves that bring sensory information to the CNS, transmit commands back to  the muscles    Autonomic  ­ automatically directs activity of the glands, organs, and smooth muscles  ­separated into Sympathetic and Parasympathetic nervous systems     Sympathetic  ­prepares body for action  ­”fight or flight” response  ­coordinates arousal in situations that require energy  ­dilates pupils, relaxes bronchi, inhibits salivation, adrenaline, inhibits bladder contraction,  accelerates heartbeat    Parasympathetic  ­returns to normal resting state  ­”rest and digest” response  ­inhibits heartless heavy breathing, contracts bladder      Endocrine System  ­glands responsible for release of hormones into the blood  ­metabolism, growth, sex, arousal  ­Pineal gland­ melatonin (sleep­wake cycle)  ­Pituitary gland­ growth hormones  ­thyroid gland­ metabolism, activates adrenal glands    Enteric Nervous System  ­consists of nerve cells lining gastrointestinal system  ­”second brain” contains many nerve cells like the spinal cord  ­gastrointestinal pain, hunger, fullness  Central Nervous system  ­composed of brain and spinal cord  ­receives sensory information from the outside world  ­coordinates information  ­well protected by vertebrae and skull  ­controls  ­vital functions  ­response to pain  ­walking  ­without the spinal cord, the brain wouldn’t be able to put its processes into actions  ­surrounded by spinal fluid    Spinal cord    Sensory neurons­ carry info to the CNS    Motor neurons­ carry commands from CNS back to the muscles/body    Interneurons­ form bridges between sensory and motor neurons    Brain    ­made up of hindbrain, midbrain, and forebrain    Hindbrain  ­brainstem connects spinal cord to the brain  ­coordinates information coming in and out  ­Medulla is where the spinal cord merges with the brain (vital functions, heart rate, blood  pressure, breathing, swallowing)  ­Pons­ bridge between higher and lower portions of the brain (dreaming, arousal)  ­Cerebellum­ mini­brain (balance and motor coordination)  ­Reticular Formation­controls mood, arousal, sleep)  ­neurons in this area are major source of serotonin and norpinephrine  Midbrain  ­sensory reflexes  Forebrain  ­highest level of the brain that controls complex cognitive, emotional, sensory and   motor functions  ­cerebral cortex (visible to the naked eye, divided into 2 hemispheres)  ­subcortical structures (located in the center of the brain) 


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