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Introduction to BioPsych, the CNS, and three main structures of the brain

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  1. 1. Psycho- Biology (Bio Psych) Basically studying the brain and it’s biological properties
  2. 2. So let us figure out some properties of our brains  Run your fingers through your scalp, and feel for bumps and dents  Make a note of the location of the bumps, and dents
  3. 3. The Nervous System  If you think of the brain as a central computer that controls all bodily functions  The nervous system is like a network that relays messages back and forth from the brain to different parts of the body.
  4. 4. Automatic Nervous System (ANS)  We are often unaware of the ANS because it functions involuntary and reflexively  we do not notice when blood vessels change size or when our heart beats faster.  However, some people can be trained to control some functions of the ANS such as heart rate or blood pressure  Parasympathetic  Sympathetic
  5. 5. Sympathetic  Fight-or-Flight Response  It uses energy  your blood pressure increases  your heart beats faster  digestion slows down
  6. 6. Parasympathetic  This calls for "Rest and Digest" responses.  Now is the time for the parasympathetic nervous to work to save energy.  This is when blood pressure can decrease  pulse rate can slow  digestion can start
  7. 7. Forebrain  Largest part of the brain  The cerebrum contains the information that essentially makes us who we are  intelligence, memory, personality, emotion, speech, and ability to feel and move  Specific areas of the cerebrum are in charge of processing these different types of information  These are called lobes, and there are four of them  the frontal, parietal, temporal, and occipital
  8. 8. Midbrain  Smallest area of the brain  Relay station for visual and auditory information  Also plays a part in body movement
  9. 9. Hindbrain  The hindbrain sits underneath the back end of the cerebrum, and it consists of:  The cerebellum, pons, and medulla  It also controls many of the body's automatic functions, like breathing, heart rate, blood pressure, swallowing, digestion, and blinking