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The morphology of the pecten oculi of the ostrich, Struthio camelus
(2006)
The pecten oculi is a structure peculiar to the avian eye. Three morphological types
of pecten oculi are recognized: conical type, vaned type and pleated type. The
pleated type has been well studied. However, there exists ...
Fundamental structural aspects and features in the bioengineering of the gas exchangers: comparative perspectives.
(2002)
Over its life, an organism's survival and success are determined by the inventory of vital adaptations that its progenitors have creatively appropriated, devised and harnessed along the evolutionary pathway. Such conserved ...
Respiratory stratagems, mechanisms, and morphology of the ‘lung’ of a tropical swamp worm, Alma emini Mich. (Oligochaeta: Glossoscolecidae): a transmission and scanning electron microscope study, with field and laboratory observations
(University of Nairobi,, 2006)
The swamp worm Alma emini subsists in the highly productive waterlogged swamps around the East African Lake Victoria. The soil consists of putrefying plant matter from which gases like methane, carbon dioxide, and hydrogen ...
Some recent advances on the study and understanding of the functional design of the avian lung: morphological and morphometric perspectives
(University of Nairobi, 2002-02)
The small highly aerobic avian species have morphometrically superior lungs while the large flightless ones have less well-refined lungs. Two parabronchial systems, i.e. the paleopulmo and neopulmo, occur in the lungs of ...
Genetic structure of Lake Magadi tilapia populations
(Wiley, 2000)
The control region of the mitochondrial DNA haplotype frequencies were significantly different among the two separate lagoon populations of Oreochromis alcalicus grahami in Lake Magadi and of O. a. alcalicus from lake ...
Comparative in vitro study of interactions between particles and respiratory surface macrophages, erythrocytes, and epithelial cells of the chicken and the rat
(2008)
In mammals, surface macrophages (SMs) play a foremost role in protecting the respiratory system by engulfing and
destroying inhaled pathogens and harmful particulates. However, in birds, the direct defense role(s) that ...
What it takes to fly: the structural and functional respiratory refinements in birds and bats
(University of Nairobi, 2000-10)
In absolute terms, flight is a highly energetically expensive form of locomotion. However, with respect to its cost per unit distance covered, powered flight is a very efficient mode of transport. Birds and bats are the ...
Comparative respiratory morphology: Themes and principles in the design and construction of the gas exchangers
(University of Nairobi, 2000-02)
Along the evolutionary continuum, a kaleidoscope of gas exchangers has evolved from the simple cell membrane of the primeval unicells. The most momentous events in this process were: the intensification of molecular oxygen ...
A scanning and transmission electron microscopic study of the lung of a caecilian Boulengerula taitanus
(University of Nairobi, 2009-03)
The lung of an apodan amphibian Bouiengerula taitanus has been investigated by scanning and transmission electron microscopy. This caecilian has only a single, long tubular lung that tapers towards the caudal end of the ...
A 3D digital reconstruction of the components of the gas exchange tissue of the lung of the muscovy duck, Cairina moschata
(Wiley, 2005)
To elucidate the shape, size, and spatial arrangement and association of the terminal respiratory units of the avian lung, a three-dimensional (3D) computer-aided voxel reconstruction was generated from serial plastic ...