The mechanism of sweat-secretion

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From measurements of the total osmotic concentration of sweat as a function of the sweating-rate the following conclusions were drawn:

  1. The primary fluid of the sweat has about the same total concentration as bloodplasma.

  2. The hypotonicity of sweat is caused by reabsorption of solute in the duct.

  3. The reabsorption of solute in the duct seems to be related to the concentration of the sweat itself and to the flow-rate. A hypothesis is given to explain this relationship.

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