Intro to Psychology Week 9 Notes
Intro to Psychology Week 9 Notes PSYC 1101
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This 2 page Class Notes was uploaded by Chapman Lindgren on Friday October 14, 2016. The Class Notes belongs to PSYC 1101 at University of Georgia taught by Achee in Fall 2016. Since its upload, it has received 19 views. For similar materials see Elementary Psychology in Psychology (PSYC) at University of Georgia.
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Date Created: 10/14/16
Psychology Notes Week 9 These notes cover what is in the book chapter 3.1,3.2,3.3, and 3.4 Neurology is the study of the brain and nervous system 1. The Nervous System i. How the brain communicates with the body ii. The nerve “wiring” of your boy iii. Electrical signals travel between nerves and muscles b. The Central Nervous System (CNS) (brain and spinal cord) i. Physical center of nervous system ii. Nerves branch off the spinal cord and create a system through the rest of the body c. Peripheral Nervous System (PNS) i. The web of nerves branching off from the CNS (rest of nerves in the body) ii. Nerves travel in the PNS from the CNS all the way to extremities such as fingertips and toes iii. There are 2 different types of nerves in the PNS: 1. Somatic Nervous System (SoNS) is responsible for voluntary movements a. Sensory nerves: stimulations like sight, touch, smell, etc. travel to the brain b. Motor nerves: brain sends signals out to the rest of the body c. Somatic nerves: connected to the parts of the body you have voluntary control over i. To move a hand voluntarily, the brain sends signals through the somatic nerves 2. Autonomic Nervous System (ANS) is responsible for involuntary movement a. Autonomic nerves are connected to parts of the body that operate automatically (breathing, blinking, etc.) i. When Dr. Achee, screamed through his microphone in class, your hand probably jerked and your heartrate spiked. Your brain automatically did these things through autonomic nerves to protect you ii. Sympathetic Nervous System (SNS): activates what is often termed the flight or fight response 1. Autonomic nerves that prepare your body’s reation to fight, flight (flee), or freeze iii. Parasympathetic Nervous System 1. What “calms you down” after a reaction from the SNS Psychology Notes Week 9 a. After Dr. Achee screamed into the microphone, the parasympathetic nervous system relaxed your muscles and lowered your heartrate CNS and PNS d. The Endocrine System i. A system of glands (glands produce chemicals / hormones for the body) ii. Endocrine glands are controlled by the autonomic nervous system 1. When Dr. Achee yelled into the microphone, the SNS caused adrenal glands to release epinephrine, which raises heartrate 2. The PNS triggered the release of norepinephrine to bring heartrate back down 2. The Neuron: the “building block” of the nervous system a. A never cell is abnormally complicated for a cell b. Nerve cells are very active (constant neuron firing)
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