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Define age related changes in Endocrine system
There is a decrease In blood concentration of the hormone / binding protein transport. Sensitive hormone receptors diminish. Age-related decreases are seen in glucose response. As far as reproductive hormones are concerned - in females, there is a decrease in estrogen and progesterone after menopause. There is a negative feedback effect. In males, the testosterone levels go down tremendously. Though the leydig cells volume increases, it cannot achieve the normal testosterone level.
Explain the Vasomotor Centre and Cardio-Inhibitory Centre The vasomotor centre (in the medulla ablongata) excites the respiratory centre. The pulmonary ventilation is increased
Food as fuel for the body machine: Body requires food for internal as well as external activities and for growth. Another way of looking at this is that the body requires ener
#1.During take-off, the wing of the airplane is actually subjected to a cyclic stress range of 150 MPa at a stress ratio of 0.1. Estimate the mean stress intensity factor, and the
Why are clouds White? Why does a day have 24 hours? Answer: A cloud is a visible accumulation of very tiny water droplets or solid ice that float in the air. Clouds are usuall
Corrosive Substances : These substances cause severe damage by chemical action when in contact with living tissue or in case of leakage, destroy /damage other materials. Mineral a
what is a fossil fuel
Define the Mechanism of Hormone Action Hormones affect cell function either by activating cyclic AMP (Adenosine monophosphate) mechanism or by activating genes. You may recall
Method of science: We have seen above that science is an enaeavour to understand nature and to mould it to satisfy human needs. In earlier units we have seen that, in this pr
Determine the role of Time in soil formation Time plays a very important role in the soil formation as it provides for the soil forming processes to act and cause significant c
what does occur chemiial changes during cleavage?
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