Results 201 to 210 of about 295,890 (258)
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2009
Publisher Summary This chapter discusses circulatory system of insects. This means that the internal organs and tissues are bathed in hemolymph, which is propelled actively to all internal surfaces by specialized pumps, pressure pulses, and body movements and is directed by vessels, tubes, and diaphragms.
Miller, Thomas A., Pass, Günther
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Publisher Summary This chapter discusses circulatory system of insects. This means that the internal organs and tissues are bathed in hemolymph, which is propelled actively to all internal surfaces by specialized pumps, pressure pulses, and body movements and is directed by vessels, tubes, and diaphragms.
Miller, Thomas A., Pass, Günther
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, 1977 Among insects the circulatory system is usually open, with only a single closed dorsal vessel. The greater part of the circulation takes place in the cavities of the body and its appendages, the blood occupying the spaces not appropriated by the internal organs. The larger spaces may be enclosed by special membranes and form definite sinuses but except
O. W. Richards, R. G. Davies
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2013
The circulatory system has two interrelated, but distinct parts, the cardiovascular system which circulates blood around the body and the lymphatic system which returns excess fluid from the tissues to the cardiovascular system. The function of the cardiovascular system is to oxygenate blood in the lungs and distribute the oxygenated blood to the ...
K.V.F. Jubb, Peter C. Kennedy
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The circulatory system has two interrelated, but distinct parts, the cardiovascular system which circulates blood around the body and the lymphatic system which returns excess fluid from the tissues to the cardiovascular system. The function of the cardiovascular system is to oxygenate blood in the lungs and distribute the oxygenated blood to the ...
K.V.F. Jubb, Peter C. Kennedy
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British Journal of Healthcare Assistants, 2020
The circulatory system transports blood around the body. The blood carries a number of other substances needed by the body to function effectively; the cardiovascular system keeps life pumping through the body. This article offers an overview of this essential body system. It is vital to understanding the various functions of the cardiovascular system,
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The circulatory system transports blood around the body. The blood carries a number of other substances needed by the body to function effectively; the cardiovascular system keeps life pumping through the body. This article offers an overview of this essential body system. It is vital to understanding the various functions of the cardiovascular system,
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1980
The circulatory system of insects, like that of all arthropods, is of the “open” type; that is, the fluid which circulates is not restricted to a network of conducting vessels as, for example, in vertebrates, but flows freely among the body organs. An open system results from the development, in evolution, of a hemocoel rather than a true coelom.
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The circulatory system of insects, like that of all arthropods, is of the “open” type; that is, the fluid which circulates is not restricted to a network of conducting vessels as, for example, in vertebrates, but flows freely among the body organs. An open system results from the development, in evolution, of a hemocoel rather than a true coelom.
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2000
Publisher Summary This chapter discusses the unique features of the fish cardiovascular system. The fish heart has a single atrium and ventricle and the latter is seldom required to develop pressures in excess of 40 mmHg (one-third that of mammals), moreover, it is rarely perfused with oxygenated blood and the myocardium is accordingly different. Fish
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Publisher Summary This chapter discusses the unique features of the fish cardiovascular system. The fish heart has a single atrium and ventricle and the latter is seldom required to develop pressures in excess of 40 mmHg (one-third that of mammals), moreover, it is rarely perfused with oxygenated blood and the myocardium is accordingly different. Fish
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The Arthropod Circulatory System
2013Arthropods have a genuine circulatory system. Their exoskeleton encloses a liquid-filled body cavity, the haemocoel. Thereby all organs and tissues are permanently exposed to a fluid medium, the haemolymph which consists of plasma with suspended haemocytes. The circulation of haemolymph is actively forced by special pumping organs referred to as hearts.
Christian S. Wirkner +2 more
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2008
In order to function, the cells of a multicellular animal must take up nutrients, discard metabolic wastes, and receive chemical messages from hormones. These substances can only pass through the cell membrane if they are dissolved in water, and for this reason, every living cell must be surrounded by an extracellular aqueous medium, the interstitial ...
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In order to function, the cells of a multicellular animal must take up nutrients, discard metabolic wastes, and receive chemical messages from hormones. These substances can only pass through the cell membrane if they are dissolved in water, and for this reason, every living cell must be surrounded by an extracellular aqueous medium, the interstitial ...
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C is for the Circulatory system…
Child Care, 2016This month, we continue our series that takes the form of an extended alphabetical adventure around the body, helping children to get to know themselves a little better.
Stephen Lillie, Paula Hammond
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Pediatric Circulatory Support Systems
ASAIO Journal, 2002Ventricular assist devices (VADs) are a valid option for long term circulatory support in pediatric patients with postoperative myocardial failure or debilitating heart defects. Most clinical experience to date has involved the short-term support of patients weighing 6 kg and larger.
Houston G. Wood +7 more
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