Abstract

Citation

Researchers should cite this work as follows:

• Rodin, E. Y. (2023). 1989-EY_Rodin-S_Jaques-Countercurrent Oxygen Exchange in the Swim Bladders of Deep-Sea Fish. SIMIODE, QUBES Educational Resources. doi:10.25334/B10Y-1331

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Article Context

Description

Rodin, E. Y. and S. Jaques. 1989. Counterurrent Oxygen Exchange in the Swim Bladders of Deep-Sea Fish:  A Mathematical Model.  Math. Comput. Modeling. 12(3): 389-393.

See https://www.sciencedirect.com/science/article/pii/0895717789901283 . Accessed 24 March 2023.

From the introduction

“When adjacent regions of matter contain different concentrations of a substance, the substance has a tendency to diffuse from the region of higher concentration to the region of lower concentration. This tendency for a substance to distribute itself uniformly is one mechanism by which biological systems transport material across both spaces and membranes. Oxygen diffuses from lungs into blood, nutrients diffuse from intestinal tracts into blood and from blood into various cells, and waste products diffuse from cells back into blood. In each case, a substance diffuses across one or more membranes from a region of high concentration to a region of low concentration. There are other cases, however, in which it is desirable to allow blood to flow from a region of high concentration to a region of low concentration without carrying much of the diffusible substance with it.”

Keywords: countercurrent, exchange, oxygen, flow, fish, bladder