Man’s Food Module 2

Man’s Food Module 2 - Mans Food Module 2...

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Man’s Food Module 2 Lesson 6 Water Terminology Intracellular Fluid Compartment- fluid located inside your cells Extracellular Fluid Compartment- fluid located outside your cells Interstitial Fluid- fluid located between your cells Electrolytes- Charged ions that conduct an electrical current in a solvent Water Balance- When an equal amount of water is lost and replenished in the body Solvent- substance in which water dissolves Insensible Water Loss- Daily water loss lost due to normal respiration and evaporation off the skin Dehydration- When there is too much lost in the body, two little consumed or both Diuretics- Substances that cause the body to lose water Osmosis- The movement from an area of lower concentration of solutes to higher concentration of solutes Antidiuretic hormone- Hormone that directs kidneys to concentrate and reduce the volume of urine produced in order to release water loss Hyponatremia- Condition of too little sodium in the blood Takes a lot of heat energy to vaporize water (change from liquid to a gas) because individual water molecules are polar and stick together by hydrogen bonds Oxygen- more electronegative than hydrogen. Exerts stronger pull on electrons so they spend more time closer to oxygen atom Because of this, oxygen is slightly negative and hydrogen is slightly positive even though the whole thing is neutral. Causes the bonds to be polar covalent bonds Hydrogen bond. Weak and only lasts a second but takes a lot of energy to overcome the attraction of hydrogen bonds. This explains water’s capacity to store heat, and its high surface tensions and boiling points Each water molecule can hydrogen bond to 4 other water molecules Compartmentalization Water must be confined into compartments in order to be controlled
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Intracellular water accounts for more than 50% of water in body. Potassium is found here Extracellular holds remaining water. Sodium found here. Both potassium and sodium work to move water in and out of the cell like a pump system Extracellular water is divided into 3 subcomponents: 1. Intravascular (water within vascular system- blood vessels). 2. Extravascular (water around the blood vessels). 3. Interstitial (about 80% of water) Water makes up 50-75% of our body mass About 2/3 is found within cells Plasma- fluid that is external to blood cells. Helps red blood cells move Water helps dissolve, mix, and break apart substances. Transports nutrients and other substances Body fluids protect tissues and organs from injury Act as lubricants within joints Allows it to maintain temperature When body temperature begins to rise heat is transported to skin Water evaporates air and carries away heat which cools the blood and reduces body temperature Exchanges Water moves in and out of the body through various exchanges Ex: when water exits a cell, it takes nutrients with it. Water moves air
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This note was uploaded on 01/27/2012 for the course FOS 2001 taught by Professor Marshall during the Summer '08 term at University of Florida.

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Man’s Food Module 2 - Mans Food Module 2...

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