A Manual of Lake Morphometry, L. Hakanson

Автор: R. Baur
Название: Morphometry of the Placental Exchange Area
ISBN: 3540081593 ISBN-13(EAN): 9783540081593
Издательство: Springer
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Описание: Considering the placenta from the functional point of view as an exchange organ be- tween mother and foetus, it is noteworthy that placentas of all types have a common structural principle in that all placentas have structures enlarging the surface area avail- able for exchange, as is also the case with other organs with similar functions, such as the lungs, kidneys and intestine. It may therefore be assumed that a quantitative rela- tionship must exist between the structure of the placenta and its function. Accurate information on this relationship could contribute to better understanding of the pla- centa and of its function. The study of this relationship requires quantitative physio- logical and morphological data. Detailed data on quantitative morphology (morphometry) are available mainly for the human placenta. Even these data, however, are rather sparse as far as the early sta- ges of development are concerned, because most-studies relate to full term placentas (see Aherne, 1975; Bender et al., 1974; Laga et aI., 1973; Geissler et aI., 1972; Baur, 1972; Cattoor, 1967; Aherne and Dunnill, 1966). We know of only a few morphomet- ric studies concerned with placentas of other animal species. These studies relate to in- vestigations on the development of the placenta of sheep (Stegeman, 1974) and of cat- tle (Baur, 1972), and measurements carried out on full term placentas of the guinea- pig (Millier et aI., 1967) and on full term placentas of various other species (Baur, 1973).

Автор: Dennis E. Slice
Название: Modern Morphometrics in Physical Anthropology
ISBN: 1441934677 ISBN-13(EAN): 9781441934673
Издательство: Springer
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Описание: Modern Morphometrics in Physical Anthropology provides a comprehensive sampling of the applications of modern, sophisticated methods of shape analysis in anthropology, and serves as a starting point for the exploration of these practices by students and researchers who might otherwise lack the local expertise or training to get started.

Автор: Ewald R. Weibel; Andre F. Cournand; Dickinson W. R
Название: Morphometry of the Human Lung
ISBN: 3642875556 ISBN-13(EAN): 9783642875557
Издательство: Springer
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Описание: The work presented in this monograph marks a new era, we believe, both in the development of quantitative anatomy of the lung, and in the correlation of anatomy with physiology. For many years, physiologists interested in the overall functioning of the lung have felt a need for better quantitative descriptions of pulmonary anatomy. As physiologists, we know a good deal about the forces operating to producepulmonary ventilation, and the quantities that define this function in rest and exercise ; and the same for effective distribution of air within the lung - "alveolar" ventilation-, and for the exchange of respiratory gases between air and blood. There have been no correspondingly precise quantitative measurements of the pulmonary structures that serve theese functions. The great advances in the study of pulmonary anatomy in the past decade have been chiefly in the realm of "fine structure". This has tended to bring together anatomy and biochemistry or physical chemistry, rather than anatomy and physiology. This conjunction has aided, for example, the conception of diffusion as a physicochemical process, but not that of diffusion as a metabolic bodily function. It was, therefore, a remarkably fortunate circumstance which brought together in our laboratory, about three years ago, Professor DoMINGO GoMEZ and Dr. EWALD R. WEIBEL: Professor GoMEZ a mathematician and biophysicist of dis­ tinction and long experience; Dr. WEIBEL a young anatomist trained under Pro­ fessor GIAN T?NDURY in Z?rich, and with additional research experience with Professor A VERILL LIEBOW at Y ale.