Physiology and Form of Fish Circulation

Physiology and Form of Fish Circulation

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This book gives a concise account of the physiology and form of the fish circulatory system. The emphasis is primarily on function, but details of structure have been included. Following a revision of ideas on hemodynamics, attention is focused on the heart as the primary pump in the fish circulatory system. The fine structure and the electrical and ionic events of cardiac myocytes are described and the major events of the cardiac cycle are outlined. The structure of the peripheral vessels then follow and attention is devoted to the circulation in certain special areas such as the gills, the renal portal system, and the secondary blood system. There are also chapters devoted to the blood and the hemopoetic tissues and an account is given of the different types of retial systems that concentrate oxygen or heat in various parts of the body. Following a description of the autonomic nervous system, the circulatory responses to exercise and hypoxia are described. The book concludes with a discussion on the circulation of hagfish and how it illuminates our understanding of the functional and structural evolution of the circulatory system.The hearts offish (Figure 3 A, B, C) consist of three or four chambers arranged in a single series. All fish have a sinus venosus into which the returning blood flows; it may have a layer of cardiac muscle, but in many teleosts ... The energy expended in accelerating the blood will increase as the square of the velocity of flow from one chamber to the next, and will ultimately be lost to the system as heat.

Title:Physiology and Form of Fish Circulation
Author:Geoffrey H. Satchell
Publisher:Cambridge University Press - 1991-02-21


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