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7/23/2019 Fight or Flight Unit.12.Part.D2 http://slidepdf.com/reader/full/fight-or-flight-unit12partd2 1/15 !"#$ &'( )* +,,-),-"+#( !"#$%&!' +./ + (&)* ,-#./#$ (0,1+". $)2 #$( .(-3)&' +./ (./)4-".( '5'#(6' 6+".#+". $)6()'#+'"'7
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Fight or Flight Unit.12.Part.D2

Feb 19, 2018

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Frankie Barnes
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Page 1: Fight or Flight Unit.12.Part.D2

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 Nervous system regulation of the

heart originates in the

cardiovascular centre   in the

medulla oblongata. This region of the brain stem receives input

from a variety of sensory

receptors and from higher brain

centres, such as the cerebral

cortex. The cardiovascular centrethen directs appropriate output by

increasing   or decreasing the

frequency of nerve impulses in

 both the   sympathetic   and

 parasympathetic branches of the

nervous system.

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