| Autor: |
Goldby, F., Hicks, C. Stanton, O'Connor, W. J., Sinclair, D. A. |
| Zdroj: |
Australian Journal of Experimental Biology & Medical Science; Mar1938, Vol. 16 Issue 1, p29-37, 9p, 4 Graphs |
| Abstrakt: |
1. Naked Australian aborigines and unclothed white subjects have been exposed to identical conditions of cooling. 2. The skin temperature falls to an equal extent in the two races. 3. Volume-Bolograph measurements demonstrate that the radial artery of both races constricts in response to cold but that this response occurs with only slight cooling of the natives, whereas intense cold is required to produce a similar response in whites. From this it is concluded that the native has a more effective regulation of heat loss by means of vasoconstriction in the skin in response to cold. 4. The oral temperature of the natives fell during the experiments whereas that of the whites did not. It is suggested that this is due to a reflex constriction of the vessels of the mucous membranes of the mouth rather than to a fall in blood temperature. 5. The processes of heat regulation in the Australian aboriginal under cold conditions are reviewed. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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