1 ne com The brain stem controls hean rat h e respiration sl and ot er

1 ne com the brain stem controls hean rat h e

This preview shows page 14 - 16 out of 20 pages.

1 ne, .com The brain stem controls hean rat . . h . e, respiration sl and ot er important functions. Th 1 . ' · eep , f e •m tcsystem i- l reward center o the brain, initiatin r 1- s r 1e g 1ee 1ngs of pie that cause us to want to repeat the beh . · asure h J' D aviors that resulred in these ee mgs . rug use can caus h . , . h e r e imbJc system to over-arnvare r e creation of th . . ese llltense feelin s Once the reward cenrer JSactivared h b . g · . j h 't e rain remembers and snmu ates t e user to repeat th . . Th e act1vny , leading to drug abuse. e ps ychoactive cap • . f . acltles o some dru also acnvate both positi ve and . gs . . Th negative emotions in this region . e cerebral cortex cont l . h ·1 · ro s sig t, hearing taste , tarn e sensanons, and smell Th r ' I h. ki . e prerrontal cortex contra s t m ng, learning, decision- maki l ·ca] b'J " ng , and ana - yn a i ity. Although drugs affect the entire brain d . . ' some rugs cause neurotransmitters 111 the limbic sy t 1 . s em to re ease 2-10 nmes the amount of dopamine rha . 1 d . n JS re ease WJ rh normal pleasurable activity. This chan h j . . . ges t e p easure cJrcu1ts of the bram, producing a pow erfi l · · u monvanon to use drugs repeatedly. With recurring drug u th · se , e increase in dopamine will eventually be adjus ted by the brain to a lower amount, resulting in depre ss i on and listlessness CHAPTER 14 • Drugs and Addi ct i ve Behavior I in the drug abuser. As drug using behavior continues, taking drugs becomes a learned behavior impairing cognitive function and resulting in compulsive behavior and addiction. Ke y Ter ms Brain stem : The part of the brain that controls heart r ate , r esp ir at i on , sleep , and othe r important functi ons . Limbic system : The r ewa rd center of the brain, i ni- tiati ng fee li ngs of pleasu re that cause us to want to r epeat the behav ior, such as eat ing and se x. Cerebral cortex : The part of the bra in th at co ntrols si ght , hea ri ng , taste , tactile sensati ons , and smel l. Neurotransmitters : Bra in chem i ca ls that al lo w th e transm i ss i on of si gna ls from one neu ron to th e next across nerve synapses . Dopamine : A neu r otransm itter th at pla ys a major role in drug add i ct i on , as it incr eases ple asu re. Corte, ~ . 1r- P,efmotal '°''"' _h- \../ ( ,-- =-- ~ · C\ __ (j , Limbic system Bra in stem FIGURE 14-9. Three ma in parts of th e brai n: co rt ex ( inc lu di ng th e prefr ontal cortex) , limbic system, and brain stem .
Image of page 14
:=IJ I Drugs and Add ' . 1ct1ve Beh avio1 • CHAPTER 14 Image of Health in Depth TI ,e Amer i can Ps . l · A ) c 1.iatric ssociat io n (1\PA) Test for Addiction .: · During the last twelve months : 1. HnveJ•ou ec>;h d I 2. 3. 4. 5. 6. 7. · rel rence to .emnce to a dntg? Do you need moreofthed I I I h . rug or a co 10 t an previously used to get the same effects? Have you experienced withdmwal symptoms? Do you ever use any other substance to prevent withdrawal symptoms?
Image of page 15
Image of page 16

You've reached the end of your free preview.

Want to read all 20 pages?

  • Spring '17
  • Morphine, cocaine, stimulant

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes