fight or flight unit.12.part.d2

7/23/2019 Fight or Flight Unit.12.Part.D2

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Kinase

Adrenal

glands

Parasympathetic

Nervous system

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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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