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Explain the Anti-Diuretic Hormone (ADH)
It is secreted by the pituitary gland and controls the ability of water to pass through the cells in the walls of the collecting ducts. If ADH is not present, then water cannot pass through the walls of the ducts. The more the ADH present, the more water can pass through. Just now we have studied about the specialized nerve cells called as osmoreceptors that are present in the hypothalamus of the brain. These cells, as you would recall, sense the Na concentration of the blood.
The nerve endings of these types of osmoreceptors are situated in the posterior pituitary gland and secrete ADH. Whether the Na concentration of the blood is high, the osmoreceptors secrete ADH. If the Na concentration of the blood is low, they do not secrete ADH. Actually, there is all time some very low level of ADH secreted from the osmoreceptors. Thus we can see that the electrolyte balance is always maintained by the kidneys.
Explain Internal Defence Mechanism Body's internal defence mechanism is carried out by white blood corpuscles (WBCs), macrophages, inflammatory reactions, fever, interferons, c
basic steps in callus culture
PROCEDURE Locate the gas cylinders available in the lab. Note the colour of the cylinder (to a maximum of two and exclude the LPG) and bands on it (if any) and record them i
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What is the term for groundwater emerging naturally at the ground surface, where the water table intersects the surface: Spring is the term for groundwater emerging aturally
Saturn-the Ringed Planet Saturn, the sixth planet, is the last one visible to the naked eye. Its rings, visible only through a telescope, make it the most striking and beaut
Data analysis: The interview data was interpreted using a Heideggerian hermeneutic phenomenological approach. The researchers became intimately immersed with the data duri
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Why are peaty and marshy soils highly acidic? The acidity is due to decomposition of organic matter under anaerobic conditions and formation of sulphuric acid.
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