... volume per cardiomyocyte compared with large mammals. Allometry Cardiomyocyte number Stereology Cardiac force Myofibrils Mitochondria The body mass ( M b ) of mammals ranges from 2 g in one of the smallest terrestrial mammals, the Etruscan shrew, to several tonnes in the elephant. One...

... is explained. Anatomic diffusion factor Gill plasticity Pangasius Scaling Stereology Morphometric analyses have demonstrated that the gill SA in water-breathing fish scale allometrically with body mass with a median exponent of 0.8, ranging from 0.6 to 1.0 (references listed in Table 4...

... in-pouch growth followed by a decrease in cardiac development and perfusion requirements during post-pouch growth. Heart Laplace Marsupial Ontogeny Remodelling Stereology The four-chambered mammalian heart completely separates the high-pressure systemic system that supplies oxygenated...

.... , Weibel   E. R. ( 1990 ). Recent stereological methods for cell biology: a brief survey . Am. J. Physiol.   258 , L148 - L156 . Dudley   R. , Gans   C. ( 1991 ). A critique of symmorphosis and optimality models in physiology . Physiol. Zool.   64 , 627 - 637 . Else   P. L...

... stereology symmorphosis tracheal system Since its conception, symmorphosis has received the support of a number of workers who view the optimal design idea as a useful null hypothesis of biological design on which to base analytical studies ( Diamond, 1992 ; Suarez, 1996 ). Where these simple...

...-mail: [email protected] ) 16 3 2009 2009 stereology microperfusion H + V-ATPase carbonic anhydrase ion-selective microelectrodes SIET H + gradients surface pH The insect gut carries out some of the most vital functions of nutrition and solute and water balance...

.... Physiol. A 99 , 411 -414. * Author for correspondence (e-mail: [email protected] ) 10 3 2008 © The Company of Biologists Limited 2008 2008 osmoregulation reptile tissue respirometry stereology transmission electron microscopy The estuarine crocodile...

... month. A predominance of microfollicles with less colloid content and dilated blood capillaries was found in the EMF group. Stereological counting showed a statistically significant increase of the volume density of follicular epithelium, interfollicular tissue and blood capillaries as well...

... for application of the stereological optical fractionator method in this species. The postnatal development of neocortical neurons and glial cells from the experimental Göttingen minipig was compared with the postnatal development of neocortical neurons in the domestic pig. A significant postnatal development...

... derived from stereological analysis of electron micrographs, mean fibre P O 2 was calculated on the basis of temperature-corrected rates of mitochondrial respiration and oxygen diffusion. The mean muscle fibre diameter (MFD) among Antarctic notothenioids was in the range 17–61 μm and mitochondrial volume...

... surrounding the nephron were quantified using stereology. Tissue processed in paraffin wax had a mean shrinkage of 17.7 % compared with 10.1 % in JB4 resin. Absolute volumes of the kidneys and nephrons were compared statistically between tissue processing methods and among seasons. Absolute volumes...

... of Biologists 1990 ultrastructure diffusion antarctic fish aerobic muscle stereology Several physiological adaptations that permit normal cell function near the freezing point of sea water are expressed in antarctic fishes, including antifreeze glycoproteins, maintenance of cell membrane...