Intro to water and ADH

Intro to water and ADH - Animal survival Animal survival...

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Unformatted text preview: Animal survival Animal survival Water and waste Aims of today… Aims of today… To be able to: • Identify ways in which a mammal gains and loses water. • State that the kidneys are the main organs for regulating the water content in a mammal. • Explain the role of ADH in the regulation of water balance. 70 % of our bodies are water! 70 % of our bodies are water! We gain liquid from…. We gain liquid from…. • • • • • • • Milk Tea Coffee 7up Water itself! Food?! Chemical reactions… Food % water Lettuce 95 Potato 78 Cheese 40 Bread 35 Cornflakes 5 Chemical reactions Chemical reactions Aerobic respiration Glucose + oxygen Water + Carbon + energy dioxide We lose water through… We lose water through… • Sweat • Breath • Urine (kidneys) • Faeces (easily expelled) Water balance Water balance • 70% of our bodies are water. • Stays constant due to our kidneys… • Drinking lots of water = lots of pee! • Drinking little water = Little pee! ADH ADH • Kidneys are controlled by anti­diuretic hormone (ADH) released from the pituitary gland (attached to brain). • ADH (a hormone) controls volume of water reabsorbed and returned to bloodstream by kidneys. • Water not reabsorbed passes to bladder Water content of the blood HIGH Water content of the blood LOW Too much water drunk Too much salt or sweating Brain produces More ADH Brain produces Less ADH Water content of the blood normal High volume of water reabsorbed by kidney Urine output LOW (small volume of Concentrated urine) Low volume of water reabsorbed by kidney Urine output HIGH (large volume of dilute urine) This powerpoint was kindly donated to is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching. ...
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This note was uploaded on 11/09/2011 for the course CHEM 201 taught by Professor Peterson during the Fall '11 term at BYU.

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