Effects of the Sympathetic Nervous System on Target Cells

smooth muscle cells around pupil - norepinephrine

dilation of pupil

cells of salivary glands - norepinephrine

increase in secretion in certain cells

cardiac muscle cells - norepinephrine

increase in heart rate force and contraction

smooth muscle cells of bronchioles - norepinephrine

dilation of bronchioles (bronchodilation)

cells of sweat glands - acetylcholine

increase in secretion

smooth muscle cells of blood vessels to skin - norepinephrine

constriction of blood vessels (vasoconstriction)

smooth muscle cells of blood vessels to skeletal muscle - norepinephrine

dilation of blood vessels (vasodilation)

smooth muscle cells of blood vessels to digestive and urinary organs - norepinephrine

vasoconstriction

smooth muscle cells of digestive and urinary tracts and sphincters - norepinephrine

relaxation of digestive and urinary tracts, contraction of sphincters

cells of digestive glands - norepinephrine

decrease in secretion

cells of pancreas and liver - norepinephrine

increase in release of glucose

cells of adrenal medulla - acetylcholine

release of epinephrine and norepinephrine