B11HPY Anatomy Physiology of the Autonomic Nervous System Moodle 2017.ppt

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Dr Vera RalevicSchool of Life SciencesNottingham University Medical SchoolNottingham, NG7 2UH[email protected]ANATOMY & PHYSIOLOGYOF THE AUTONOMICNERVOUS SYSTEM
OBJECTIVESOBJECTIVES1.Understand the anatomical organisation of theautonomic nervous system, including thearrangement of the main nerve cells which formthe parasympathetic and sympathetic systems2.Describe the main functions of theparasympathetic and sympathetic nervoussystems3.Describe the main chemical neurotransmitters ofthe autonomic nervous system and be aware oftheir receptors
Subconscious controlAutonomic nervous system- autonomous = self governing“Visceral nervous system”- control over internal organseg. heart rate, pupil diameter, blood vessel contractility, hormonalsecretions, gastrointestinal motility.HomeostasisIntroduction10.00 am!functions not undervoluntary controlThe morning of the HPY exam
CENTRAL NERVOUS SYSTEM(CNS)PERIPHERAL NERVOUS SYSTEM(PNS)SOMATICControls striated muscleAUTONOMIC (ANS)Controls cardiac & smooth muscle, & glandsPARASYMPATHETICSYMPATHETICSomatic nervous system– conscious control of skeletal musclesAutonomic nervous system– unconscious control of cardiac, smoothmuscle & glandsParasympathetic/sympathetic division is anatomical:–based on CNS location of cell body of preganglionic nerve.ENTERICEFFERENT division(carries instructionsfrom CNS)AFFERENT division(carries instructions to CNS)
● Axons of theSOMATICnervous system have:

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