Summary
Changes in the red blood cell content of the cat cerebral cortical vessels were monitored using reflecting light during a decrease in PIO2. The following observations were made:
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1)
the capillary bed red blood cell content increased during hypoxia prior to the arteriole response at an arterial oxygen tension of 52.0 mmHg;
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2)
at arterial oxygen tensions below 52 mmHg the red blood cell content increased in all vessels simultaneously;
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3)
as the PIO2 decreased, the increase in red blood cell content occurred earlier in all vessels.
Capillaries, therefore, can respond to hypoxia independently of the arteriole in cat cerebal cortical tissue.
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References
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© 1987 Plenum Press, New York
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Weinbrecht, P., Longmuir, I., Knopp, J., Mills, M. (1987). Cerebral Microcirculatory Changes during Exposure to Hypoxia. In: Silver, I.A., Silver, A. (eds) Oxygen Transport to Tissue IX. Advances in Experimental Medicine and Biology, vol 215. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-7433-6_28
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DOI: https://doi.org/10.1007/978-1-4684-7433-6_28
Publisher Name: Springer, Boston, MA
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