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Side effects of cialis overdose

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The interface equal at motionless air to several millimetres, at a wind side effects of cialis overdose decrease to

side effects of cialis overdose

microns. Heat exchange of this kind substantially depends on speed of movement of air and is called as compulsory конвекцией.

For heat dispersion конвекцией the flow of a surface of a body a stream of air buy cheap generic cialis lower temperature is required. Layer of air directly contacting to a skin heats up, reduces the density, rises and replaced with colder and dense air.

In conditions when air temperature is equal 20С, and relative humidity – 40 – 60the body of the adult person disseminates in environment by теплопроведения and конвекции nearby 25 – 30 of heat. The quantity given конвекцией heat increases at increase of speed of movement of air streams a wind, ventilation.

Evaporation is a return of heat in environment at the expense of evaporation of sweat or a moisture from a surface of a skin and mucous respiratory ways. At environment temperature nearby 20С evaporation makes nearby 36 гч. 0,58 kcal of thermal energy are spent For evaporation 1 г waters, i. by evaporation the human body gives in these conditions about 20 of all disseminated heat.

Increase of external temperature, physical activity performance strengthen потоотделение, and it can increase to 500 – 2000 гч. If the external temperature exceeds average value of temperature of a skin the organism cannot give to environment warmly radiation, конвекцией and теплопроведением, therefore strengthening of evaporation of a moisture from a body surface becomes unique way of dispersion of heat.

Such evaporation is possible until humidity of air of environment remains less than 100. At intensive потоотделении, high humidity and small speed of movement of air of a droplet of sweat, without having time to evaporate, flow down from a body surface, теплоотдача by evaporation becomes less effective.

Body temperature of the person and its measurement Body temperature гомойотермных organisms is difficult function теплопродукции in different fabrics, carrying over of heat as a result of blood circulation and local temperature gradients. As heat is given to environment mainly through a skin, temperature of superficial fabrics cover, as a rule, below temperature of deeper fabrics kernel.

In concept гомойотермное the kernel is included by the fabrics of a human body located on depth 1 sm from a surface and more. The temperature of superficial fabrics is non-uniform it above on the sites of a body well supplied with blood or closed by clothes, i. depends, on the one hand, on intensity of carrying over to it of heat blood, and with another – from cooling or warming action of temperature of environment.

In extremities there is a longitudinal axial temperature gradient and radial perpendicular surfaces a temperature gradient.

In connection with non-uniformity of geometrical forms of a human body spatial distribution of cialis 20mg tablets temperature is described by difficult three-dimensional function. For example, when easily dressed person is in a premise with air temperature 20С, the temperature of a deep muscular part of a hip makes approximately 35С, temperature of deep layers икроножной muscles 33С, and in the foot centre only 27 – 28С.

The temperature of deep fabrics of a body is distributed in regular more intervals and makes nearby 36,7-37,0S fig. A picture i_029. jpg Kernel temperature – one of the major constants of the homeostasis, defining speed of biochemical reactions, конформационные changes of biologically important molecules, аследовательно, and level of activity of all cages of an organism. However and it is not a constant neither in spatial, nor in the time relation. Even in a brain there is a radial temperature gradient more than in ГС from the central part to a bark.

Daily fluctuations of internal temperature in conditions относительногопокоя are in limits ГС. The maximum value body temperature reaches in 18 – 20 hours and decreases to the minimum during a night dream, to 4-6 oclock in the morning. Daily changes of temperature of a kernel are based on эндогенном get cialis rhythm internal clocks which is usually synchronised with external gauges of time. During

side effects of cialis overdose

with crossing of terrestrial meridians it is required 1 – 2 weeks that the temperature rhythm has come to conformity with local time.

On a daily rhythm rhythms with longer periods can be imposed. recommended cialis dosage temperature rhythm synchronised with менструальным by a cycle is most distinctly shown.

The fluctuations of body temperature caused by changes of external temperature, are expressed in much большей to degree near to a surface of a body and in trailer parts of extremities, i.

it is possible to allocate пойкилотермную a cover and has anyone bought cialis online a core kernel. At cooling action of temperature of environment the weight of a kernel decreases, and at warming – increases.

Most close average value of temperature of a kernel of a body is reflected by blood temperature in heart cavities, an aorta and other large vessels. As an indicator of temperature of deep fabrics of a body usually use values ректальной, hypoglossal and axillary temperature, and also temperature in external acoustical pass.

The brain temperature is reflected well by eardrum temperature. For the clinical purposes preferably measurement ректальной temperatures, hypoglossal temperature usually on 0,2 – 0,5С more low ректальной. The axillary temperature also can serve as an indicator of internal temperature as if the hand is densely pressed to a trunk, temperature gradients side effects of cialis overdose displaced so that the inside layer border reaches an axillary hollow, however it demands long time in some cases to 30 mines.

Thermoregulation system Thermoregulation is a set of the physiological processes which activity is directed on maintenance of side effects of cialis overdose relative constancy of temperature of a kernel in the conditions of change of temperature of environment by means of regulation теплоотдачи and теплопродукции. Thermoregulation is directed on the prevention of infringements of thermal balance of an organism or on its restoration if such changes have already occurred. The thermoregulation system consists of a number of elements with the interconnected functions.

The information on temperature comes from peripheral and central thermoreceptors gauges on афферентным to nerves to the thermoregulation centre in гипоталамусе. This centre processes the arrived information and sends commands эффекторам to executive links, i. activates various mechanisms which provide change теплопродукции and теплоотдачи.

On the work the thermoregulation system is similar to system of the automated control with negative feedback which counteracts the changes of temperature caused by external and internal indignations. The kernel temperature is supported at certain level, and the reaction size эффекторов is proportional to a deviation of true temperature from this level.

Reflex and гуморальные thermoregulation mechanisms Thermoreceptors Functions of thermoreceptors carry out the specialised nervous cages having especially high sensitivity to temperature influences. They are located in various parts of a body a skin, skeletal muscles, blood vessels, in an internal in a stomach, an intestines, a uterus, a bladder, in respiratory ways, in a spinal cord, ретикулярной formations, an average brain, гипоталамусе, a bark of the big hemispheres and in other departments TSNS.