Physiology Commons^™

Adult Oral Diadochokinesis Rates : Preliminary Normative Data, Carol Kafton-Minkel

Dissertations and Theses

In the clinical evaluation and management of speech disorders, a speech-language pathologist may observe disturbances in a client's motor abilities that suggest possible neurological dysfunction. One possible disturbance is in oral diadochokinesis (DIO), an individual's ability to start and stop the movement of the articulators rapidly and execute repetitive, alternating, sequential movements typically associated with speech articulation. It is often recommended that a speech-language pathologist test DIO speed and compare the performance to available norms. There is, however, a lack of normative DIO data spanning all ages of adulthood. The purpose of this study was to develop preliminary normative data …

Aspects Of Anuran Metabolism: Effects Of Chronic Hypoxia On Maximal Oxygen Uptake Rates And The Fate Of Lactic Acid, Thomas Charles Solberg

Dissertations and Theses

Some aspects of anuran metabolism are examined, with special emphasis on possible limitations to aerobic metabolism and the effect of chronic hypoxia acclimation on maximal rates of aerobic metabolism and the metabolic fate of lactic acid accumulated after anaerobic metabolism.

Menstrual Cycle Effects On Blood Pressure, Body Weight And Heart Rates During Rest, Exercise And Recovery On College Athletes, Dawn J. Shutter

Masters Theses

Ten members of the Eastern Illinois University women's track team were used as subjects to determine the relationship of body weight, blood pressure and heart rate during rest, exercise and recovery to menstruation.

The subjects were tested on two different occasions. The first test was administered within twenty-four hours of the onset of menstruation. The second test was conducted seven days later. During both testing periods blood pressure, body weight and resting heart rate measurements were taken before beginning the treadmill protocol (progressive grade and speed increases up to 4% and 8 mph, respectively). The subjects ran on a motor …

The Neural Organization Of The Lamina Ganglionaris In The Crab Hemigrapsus Nudus A Light And Electron Microscope Study, Hsu-Cheng Huang

Loma Linda University Electronic Theses, Dissertations & Projects

The gross structure and the neural arrangements in the optic lamina of crab Hemigrapsus nudus have been studied by light microscopy Golgi techniques and by electron microscopy. The lamina from distal to proximal is composed of a distinct cell layer, a fibular synaptic region, the plexiform layer, a spares cell layer, and the first optic chiasma. Golgi preparation of the lamina reveal four types of cells contributing to the lamina synaptic layer. Retinula cell axons and terminations, monopolar neurons with perikarya in the distal cell layer, tangential cells, neurons whose primary process enters from the chiasma with secondary processes branching …

The Role Of The Parotid Salivary Glands In The Regulation Of Insulin Secretion, Kenneth L. Millard

Loma Linda University Electronic Theses, Dissertations & Projects

Stress of handling, partial or complete sialoadenectomy, and the administration of parotid hormone (PH), sodium fluoride (NaF), or guanidino-succinic acid (GSA) were examined for effects on fasting plasma glucose and insulin or effects on intravenous glucose tolerance in male Sprague-Dawley rats. Basal glucose and insulin were substantially elevated as a result of the stress of translocation in large animals, but were not altered in small animals. A rise in plasma insulin occured in control animals 20 minutes following anesthesia and the removal of a blood sample by cardiac puncture but not in animals that had been handled twice daily for …

The Effect Of Exercise On Blood Flow In Pregnant Guinea Pigs, Marjorie Correll Sladek

Loma Linda University Electronic Theses, Dissertations & Projects

Recent investigations have shown decreased fetal weight in pregnant animals who were exercised regularly during pregnancy (Gilbert; Nelson; Longo, 1979; Terada, 1974). The purpose of this experimental study was to investigate fetal weight gain and measure blood flow in pregnant guinea pigs who were exercised 45 minutes per day; and thus answer the hypothesis that prolonged maternal exercise will cause decreased weight gain and decreased placental blood flow during pregnancy.

Twenty pregnant guinea pigs were exercised 15 minutes three times daily from 10 days gestation to approximately 60-62 days gestation (67 days being term) and were compared with 19 control …

Front Matter, Vol. 5

Great Basin Naturalist Memoirs

No abstract provided.

End Matter, Vol. 5, Index

Great Basin Naturalist Memoirs

No abstract provided.

End Matter, Vol. 5

Great Basin Naturalist Memoirs

No abstract provided.

Full Issue, Vol. 5

Great Basin Naturalist Memoirs

No abstract provided.

End Matter, Vol. 4, Index

Great Basin Naturalist Memoirs

No abstract provided.

Mineral Compostition Of Atriplex Hymenelytra Growing In The Northern Mojave Desert, A. Wallace, E. M. Romney, R. B. Hunter, J. E. Kinnear, G. V. Alexander

Great Basin Naturalist Memoirs

Fifty samples of Atriplex hymenelytra (Torr.) S. Wats, were collected from several different locations in southern Nevada and California to test variability in mineral composition. Only Na, V, P. Ca, Mg, Mn, and Sr in the samples appeared to represent a uniform population resulting in normal curves for frequency distribution. Even so, about 40 percent of the variance for these elements was due to location. All elements differed enough with location so that no element really represented a uniform population. The coefficient of variation for most elements was over 40 percent and one was over 100 percent. The proportion of …

End Matter, Vol. 4

Great Basin Naturalist Memoirs

No abstract provided.

Full Issue, Vol. 4

Great Basin Naturalist Memoirs

No abstract provided.

Parent Material Which Produces Saline Outcrops As A Factor In Differential Distribution Of Perennial Plants In The Northern Mojave Desert, A. Wallace, E. M. Romney, R. A. Wood, A. A. El-Ghonemy, S. A. Bamberg

Great Basin Naturalist Memoirs

An area of 0.46 km² divided into six zones in the northern Mojave Desert transitional with the Great Basin Desert has been studied. Diversity is high among the perennial plant species within the 0.46 km² area. Common species for the two deserts that are present in the area studied are Atriplex confertifolia (Torr. & Frem.) S.Wats., Ceratoides lanata (Pursh) J. T. Howell, Grayia spinosa (Hook.) Moq., Ephedra nevadensis S. Wats. Some other species present include Lycium andersonii A. Gray, Lycium pallidum Miers, Ambrosia dumosa (A. Gray) Payne., Larrea tridentata (Sesse & Moc. ex DC) Cov., Acamptopappus shockleyi A. …

Transpiration And Co2 Fixation Of Selected Desert Shrubs As Related To Soil-Water Potential, S. B. Clark, J. Letey Jr., O. R. Lunt, A. Wallace, G. E. Kleinkopf, E. M. Romney

Great Basin Naturalist Memoirs

In desert plants, transpiration rates decreased before photosynthetic rates when plants were entering a period of water stress. This may have adaptive consequences. A difference of -5 bars in the soil-moisture potential had considerable importance in reducing the rate of transpiration. In Helianthus annuus L. (sunflower) the photosynthetic rate decreased before the transpiration rate in contrast to Great Basin-Mojave Desert plants, and the changes occurred with a -1 bar difference in soil-moisture potential. Morphological changes in three desert plant species [Artemisia tridentata Nutt., Ambrosia dumosa (Gray) Payne, Larrea tridentata (Ses. Moc. ex DC) Cov.] as the soil-moisture potential decreased …

Front Matter, Vol. 4

Great Basin Naturalist Memoirs

No abstract provided.

A Light And Electron Microscopic Study Of Visual Neurons In The Medulla Externa Of The Crab Hemigrapsus Nudus, Yu Cheng Liao

Loma Linda University Electronic Theses, Dissertations & Projects

The decapod crustacean with a relatively well-defined visual system have contributed significantly to our understanding of visual neuron morphology and physiology. The general morphology of the optic lobes of several decapods were initially described by Parker (1897) and Hanstrom (1924). In the past few years, several light and electron microscope studies have been made on the lamina ganglionaris: the first optic ganglion, of the lobster (Hamori and Horridge, 1966a); the crayfish (Hafner, 1974; Nassel, 1976a), and the crab (Stowe et al., 1977; Rafuse et al., in preparation). As yet, no adequate description has been made of the visual neurons in …

Analysis Of The Potentials And Topographical Relations Between The Olfactory Bulb And Prepyriform Cortex, William S. Seibly

Loma Linda University Electronic Theses, Dissertations & Projects

Olfactory bulb efferents sweep caudally over the prepyriform cortex in a broad fiber sheet called the lateral olfactory tract (LOT). The LOT begins as a compact sheet of fibers in the olfactory peduncle and narrows to a bundle caudally. It is the primary axonal pathway between the olfactory bulb and the cortex. The shape and cross-sectional area of the LOT was measured from histologic sections. The cross-sectional area diminishes to about half from rostral to caudal measurements. An array of 58 electrodes spaced at intervals of 1 mm was constructed to conform to the curvilinear surface and geometry of the …

The Rate Of The Healing Process In Venous Thrombi Produced By A Sclerosing Agent With Special Attention To Endothelial Lining, Kiyoshi Tanaka

Loma Linda University Electronic Theses, Dissertations & Projects

Despite extensive clinical and experimental investigations of venous thrombosis, relatively little is known about the early phases of healing of the venous thrombus. Soon after its discovery heparin has become the most popular agent for the prevention and treatment of venous thrombosis, but there are a number of unanswered questions regarding the most satisfactory treatment for venous thrombosis.

One area of controversy has been the duration of anticoagulation therapy for acute venous thrombosis. If the anticoagulant is discontinued too soon, the thrombus may continue to propagate. Prolonged anticoagulant therapy exposes the patient to the risk of serious hemorrhage. The objective …

The Effect Of Walk Or Jog Recovery From Anaerobic Work On Blood Lactate Levels And Subsequent Two-Minute Run Performance, Rick Alan Livesey

Masters Theses

The purpose of the study was to investigate the effects of a walk or jog recovery on two-minute run performances and the concentrations of blood lactate.

Eight highly trained male subjects were selected from the Eastern Illinois University Track Team. The test procedure consisted of two, maximal two-minute runs on the track for distance, separated by a 30-minute recovery. The recovery consisted of a walk at 20-minutes per mile pace or a jog at 7½ to 8 minutes per mile pace. Venous blood samples were drawn three minutes after the first run, two minutes prior to the second run, and …

End Matter, Vol. 3

Great Basin Naturalist Memoirs

No abstract provided.

Patterns Of Fetal Lamb Regional Cerebral Blood Flow During And After Prolonged Hypoxia, Stephen Ashwal, John S. Majcher, Nestor Vain, Lawrence D. Longo

Loma Linda University Electronic Theses, Dissertations & Projects

[Abstract not included]

Speculation: In the fetal lamb during prolonged intrauterine hypoxia, total and regional cerebral blood flows increase to the same extent without evidence of preferential shunting to critical brainstem or subcortical areas. Neuropathologic studies have indicated relative sparing of these areas during similar animal experimental or human neonatal conditions. This suggests that the pattern of hypoxic ischemic insult to the neonatal central nervous system associated with asphyxia may differ from that produced by hypoxia alone. In addition, during asphyxia these pathologic changes may result primarily from hypotension and decreased regional cerebral blood flow, or from regional metabolic derangements …

End Matter, Vol. 3, Index

Great Basin Naturalist Memoirs

No abstract provided.

Full Issue, Vol. 3

Great Basin Naturalist Memoirs

No abstract provided.

Front Matter, Vol. 3

Great Basin Naturalist Memoirs

No abstract provided.

The Effects Of Orally Administered Charcoal On Intestinal Gas, Herbert J. Thompson

Loma Linda University Electronic Theses, Dissertations & Projects

Our primary objectives were to determine if orally administered charcoal effectively decreased intestinal gas, and relieved subjective symptoms associated with a high gas producing meal.

The adsorptive properties of charcoal for those gases usually found in intestines (CO₂, H₂, CH₄, H₂S) were first tested by placing measured samples of each gas alone with weighted samples of activated charcoal in a respirometer.

The degree of adsorption of each gas by charcoal was determined. Charcoal effectively adsorbed H₂ and CO₂.

A group of normal human males were fed a gas producing …

Isolation And Chemico-Physiologic Characterization Of A Parotid Hormone Activity From Porcine Glands, Jean-Marc Tieche

Loma Linda University Electronic Theses, Dissertations & Projects

For the past decade, evidence has accumulated which suggests that the resistance of the teeth to dental decay is in part under systemic control. It was shown that the resistance is accomplished through the optimal operation of a dentinal fluid transport mechanism which is believed to be hormonally controlled by the hypothalamic-parotid gland endocrine axis. Although circumstantial evidence for such an endocrine function was strong, the isolation of a parotid hormone which stimulates the dentinal fluid transport mechanism remained to be accomplished.

Using modern biochemical techniques, a methodology was designed to isolate and purify the hormone from porcine parotid glands. …

End Matter, Vol. 20 No. 5

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Mammals Of The Smithsonian Venezuelan Project, Charles O. Handley Jr.

Brigham Young University Science Bulletin, Biological Series

Mammals and their ectoparasites were collected in all parts of Venezuela between 1965 and 1968 by the Smithsonian Venezuelan Project. Ecological and geographical data are summarized here for 38,213 specimens of 270 species of mammals obtained by the project.