First Advisor

Stanley S. Hillman

Term of Graduation

Summer 1984

Date of Publication

8-3-1984

Document Type

Thesis

Degree Name

Master of Science (M.S.) in Biology

Department

Biology

Language

English

Subjects

Anura -- Physiology, Amphibians -- Physiology, Dehydration (Physiology), Hemoglobin, Oxygen -- Physiological transport, Blood cells

DOI

10.15760/etd.5304

Physical Description

1 online resource (2, vii, 35 pages)

Abstract

Two aspects of possible adaptation in cardiovascular performance caused by increased plasma electrolytes were examined. Cells in anisotonic plasma may either act as osmometers or volume regulate. Blood flow rate is dependent upon cell viscosity, which in turn is a consequence of cell volume and membrane deform-ability. Cell volume changes which increase membrane deform-ability will thus potentially extend the limits of dehydration tolerance. It was found in R. catesbeiana and B. marinus that red blood cell is maintain constant volume during dehydration. Cells in vitro initially lose water, but then sodium, potassium and water move into the cell. Cell viscosity within the physiologic range of hematocrits was higher in salt loaded non-regulating cell is of B. marinus than in regulating isotonic cells.

Rights

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Comments

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Persistent Identifier

https://archives.pdx.edu/ds/psu/19430

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