ESS 3 Lecture Notes - Lecture 19: Potassium Chloride, Manganese, Molybdenum
7 Mar 2018
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Document Summary
Water (h20) is an essential nutrient central to all body functions. 60 to 70% of our bodies are made up of water. Adult male has more total body water than an adult female. Ratio of water in body"s organs varies. Water moves in and out of cells through osmosis to maintain fluid balance in the body. Direction depends on the concentration of solutes. Thirst response lags behind the body"s need for water. Caused by drinking 10-20 liters within a few hours. Provides about one third of total water intake in the us. Obligatory water excretion each day as urine. Minimum 500 ml to carry away waste. Daily losses total 2500 ml on average. Within the hypothalamus is a collection of cells known as the thirst mechanism. The thirst mechanism prompts us to feel thirsty when it detects either. Minerals are categorized by the amount required in the diet.
