Skin of the dorsal aspect of human hands and fingers possesses an active vasodilator system.

@article{Johnson1995SkinOT,
  title={Skin of the dorsal aspect of human hands and fingers possesses an active vasodilator system.},
  author={John M. Johnson and Pablo E. Pergola and Fei Liao and Dean L. Kellogg and Craig G Crandall},
  journal={Journal of applied physiology},
  year={1995},
  volume={78 3},
  pages={948-54}
}
To test for an active vasodilator system in human hand and finger skin, seven subjects had a small area of dorsal hand, palm, or dorsal finger pretreated with bretylium (BT) to block adrenergic vasoconstriction. Skin blood flow was monitored at a BT-treated site, a comparable untreated site, and the forearm by laser-Doppler flowmetry. Cutaneous vascular conductance (CVC) was evaluated from the ratio of blood flow to arterial pressure. Body cooling, to evaluate vasoconstrictor system blockade… CONTINUE READING

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