Portland State University. Department of Biology
Philip C. Withers
Date of Award
Master of Science (M.S.) in Biology
1 online resource (81 p.)
Oxygen -- Physiological transport, Cardiovascular system -- Vertebrates, Vertebrates -- Physiology, Blood -- Viscosity, Blood flow
The hematological and rheological characteristics of blood from a number of vertebrates was compared to assess possible species differences in blood viscosity that may influence cardiovascular oxygen transport. Nucleated red blood cells (RBCs) were more viscous (measured by cone-plate viscometry) in comparison with enucleate (mammalian) RBCs at hematocrits greater than 40% when measured at equivalent temperatures. The lower viscosity of enucleate RBCs is attributed to an enhanced deformability of enucleate cells in comparison to nucleated cells.
Hedrick, Michael Scott, "Aspects of cardiovascular oxygen transport in vertebrates" (1985). Dissertations and Theses. Paper 3404.