Results 61 to 70 of about 149,522 (97)
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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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1983
Profound changes in the demands on the circulatory system have occurred during the evolution of the vertebrates from the aquatic forms to the more advanced terrestrial forms. These changes reflect a variety of anatomical and functional alterations, and also the adjustment from aquatic life at zero gravity to the demands of terrestrial life.
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Profound changes in the demands on the circulatory system have occurred during the evolution of the vertebrates from the aquatic forms to the more advanced terrestrial forms. These changes reflect a variety of anatomical and functional alterations, and also the adjustment from aquatic life at zero gravity to the demands of terrestrial life.
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The Circulatory System of Spiders
2012The spider circulatory system is a structurally complex and elaborately regulated system with a broad range of functionalities. Apart from its well-known role in metabolism and, plesiomorphically at least, in oxygen distribution, its main functions are hydraulic.
Christian S. Wirkner, Katarina Huckstorf
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An overview of the circulatory system
Dental Nursing, 2018Emma Male explores the function and components of the circulatory system – the London underground service to the human body
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Simulation of a Human Circulatory System
2012This article describes a mathematically based human circulatory model. The model consists of lumped elements made of venous, arterial, peripheral, pulmonary vein and artery segments. A heart model is simulated using 4 chambers (left and right atriums and ventricles).
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