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Peripheral Nervous System Questions 1

Peripheral Nervous System Questions 1

Q 1. Describe TWO differences between the norepinephrine and epinephrine systematic pathways. 2. How does a varicosity differ from a normal neuron synapse? 3.If you were a clinician, why would you give someone a Beta 2 agonist to prevent an asthmatic attack .

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1. Norepinephrine is released into blood at low levels and epinephrine is only released when the body is in the stress. Epinephrine is excitatory and norepinephrine is inhibitory . Epinephrine causes vasodilation in skeletal muscles during fight or flight response . Norepinephrine causes vasoconstriction in skin and viscera shift blood to other areas such as skeletal muscles .