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Showing 1 to 20 of 25 for “"Physiological Sciences"”.
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Lipoids and blood platelets with reference to blood coagulation and the hemorrhagic diseases
By specifically analysing for the various active principles of plasma, platelets, tissues and their fractions, much new information has been obtained concerning the role of lipoids and platelets in blood coagulation and in the hemostatic mechanisms in health and disease. Analysed components are …
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Studies in the physiology of creatine and creatinine
The studies recorded in this thesis cover a wide portion of the field of creatine-creatinine metabolism. They involve a consideration of the problem of the origin of creatine, of the endocrine factors controlling its metabolism, and of the function of creatine and creatinine in the body. In order …
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The physiology and pharmacology of some cellulose derivatives
Increasing knowledge in physics and chemistry has stimulated research on high polymers, or to use another term, on macromolecules and on their applications in various fields. The definition of macromolecules given in 1922 by Staudinger and Fritschi states that a macromolecule is a compound with …
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Somatosensory processing by rat medial pontomedullary reticular formation neurones : responses to innocuous and noxious thermal and mechanical stimuli
This work examines somatosensory processing in "giant" neurones of the medial pontomedullary reticular formation (PMRF) in the rat, with particular emphasis on the response to cutaneous thermal stimuli. Thermal test stimuli were employed as these were deemed to be more precisely quantifiable than …
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Gravimetric studies of certain Amphibian Organs under normal and experimental conditions
A cycle of seasonal ovarian weight changes in Xenopus is described, similar in all respects to that described by other workers.
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The effects of pulsed static and oscillating magnetic fields on rat pineal serotonin N-acetyltransferase activity
Concerns about the possible hazardous effects of electromagnetic fields (EMF ' s) has resulted in attempts to address this issue. Several authors have shown that EMF exposure affects biological systems and more specifically the pineal enzyme, serotonin N-acetyltransferase (SNAT), inhibiting the …
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The effects of endurance training on lactate production and removal during progressive exercise in man
It is a well-documented finding that blood lactate concentrations at any given absolute or relative (% of maximum oxygen uptake; % VO₂ₘₐₓ) workload, are lower following endurance training. The search for the mechanisms responsible for lower blood lactate concentrations after training, however, has …
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Studies in the reproductive Physiology of the Amphibia
The changes occurring in the red blood cells in infective illness are amongst the least carefully studied problems of haematology. In spite of the fact that these anamias are extremely common, it is difficult to find adequate literature to make possible even a clear description of the blood picture …
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Insulin: its assay, extraction and sources
… Accompanying this were the investigations of the physiological, chemical and physical properties of the hormone. Since that time a mass of evidence relating to the above and produce by a host of workers has accumulated.
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Pituitary-gonadal control of creatinine metabolism.
The endocrine in general for a considerable period have been known to exert a humoraal action on the body, controlling its functions to a large extent. These actions have been closely investigated and a clear correlation between the ductless glands have been shown. The interrelation and dependency …
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Changes in plasma inorganic phosphate associated with endocrine activity in Xenopus laevis
The plasma inorganic phosphate level may be influenced by (1) factors affecting the intermediary metabolism of phosphorus, (2) alternation in the degree of absorption of phosphorus, (3) alteration in the degree of excretion of phosphorus. In the introduction, the intermediary metabolism of …
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The plasma corticosteroids: their determination and normal variations
The current interest in the secretions of the adrenal cortex is shared by physiologist, physician and pharmacologists alike. such attention is not surprising in the case of a gland which is immediately essential to life, which can produce syndromes as varied as precocious puberty, virilisation; …
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Splenic and portal venography
In 1945 Blakemore and Lord published their work on the treatment of Banti's Syndrome by anastomosing the splenic to the left renal vein, or the portal vein to the inferior vena cava. In the same year Whipple (1945) classified portal hypertension into cases with an obstruction in the portal system …
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The influence of the Gonads on Protein Metabolism
It has long been known that the gonads exercise an important effect on the individual, nut only in recent years has it been recognized how intricate and vast this effect can be. From the earliest of times it was common knowledge that gonadectomy in either males or females resulted in sterility. …
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Studies in the biosynthesis of the hormones of the thyroid gland.
This project was undertaken in order to elucidate two important problems in Thyroid Biochemistry namely, the kinetics of labelling of tyrosine and monoiodotyrosine (MIT) and the pathways of synthesis of triiodothyronine (T3 ) and thyroxine (T4 ).
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Studies in the reproductive Physiology of the Amphibia
The changes occurring in the red blood cells in infective illness are amongst the least carefully studied problems of haematology. In spite of the fact that these anamias are extremely common, it is difficult to find adequate literature to make possible even a clear description of the blood picture …
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Processing of transient stimuli by the visual system of the rat
… Standard stereotaxic and extracellular electrophysiological techniques were employed. Continuous (on-line) raster plots and peri-stimulus time histograms (PSTHs) of the extracellular spikes from 81 visual cortical and 55 lateral geniculate nucleus (LGN) neurones were compiled. The strobe-flash …
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Histological and morphological studies of the endocrine organs of xenopus laevis
… last ten years, the basis of a growing body of physiological enquiries initiated by Jolly's research on reflex action. Its viability in the laboratory and amenability to operative procedure in particular, make it a peculiarly suitable object for investigation. It is regrettable therefore, that …
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Vitamin and mineral supplementation in athletes, with special reference to the ergogenic effects and possible toxic side-effects
The use of vitamin and mineral supplements as ergogenic aids is widespread amongst both athletes and the general population. Although there appear to be at least some theoretical reasons to suggest that supplementation may enhance athletic performance, there is limited scientific justification for …
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A Histological method for the Biological estimation of Vitamin A
There are considerable differences between physico-chemical and biological results of Vitamin A estimations, owing to the fact that "the analyst determines the proportion of a substance present, whilst the bioassayist determines the effect"
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