![]() ![]() If more fluid is present than desired at the cell, the kidneys proceed to make urine by filtering the excess fluid from the blood. So, whenever any minerals or molecules become too concentrated in one compartment (ICF or ECF), the brain will signal the body to drink more water until the compartment is appropriately diluted for homeostasis (maintenance of the body's internal environment). The brain (specifically the hypothalamus) sends a signal to drink more water. Cell sensors detect this change and signal the brain that the cell is dehydrating. This is because the sodium from the pizza sauce and cheese (and meats) accumulates in the ECF, pulling water from the ICF. For instance, eating pizza often makes a person thirsty. If any molecule becomes too concentrated in one fluid compartment, it will pull water from the other compartment to dilute itself. Minerals such as chloride, potassium and sodium participate in the maintenance of the ICF and ECF levels a process governed by hormonal messages from the brain and the kidneys. The ICF accounts for about 65% of the body water while the ECF (35%) is the blood plasma and lymph (a transparent, slightly yellow fluid that carries lymphocytes), which serve as the medium of transport for wastes and nutrients throughout the body. Water is stored in either intracellular fluid (ICF) or extracellular fluid (ECF) compartments. Water also serves as a cushioning component between joints, in the spinal cord and in the brain. The body uses water as a coolant, helping to regulate body temperature during exercise, fever and in hot environments. Even though it contains no calorie content, water is the medium for most chemical reactions in the body, especially those metabolic reactions involved in energy production. ![]() Water is necessary for all digestion and absorption functions, and lubricates mucous membranes in the gastrointestinal and respiratory tracts. Drinking water contains several electrolytes (substances in solution that conduct an electric current) including calcium, chloride, fluoride, magnesium, potassium and sodium. Water is intricately involved in numerous functions of the body including the transport of oxygen, nutrients and waste products into and out of the cells. It is an inorganic (contains no carbons) substance composed of two hydrogen atoms which are bonded to one oxygen atom. Water is the most abundant constituent of the body, accounting for 50% to 60% of its mass. Water 101: The Basic Facts About Water in the Body? This article will explore into the depths of knowledge and research on this mysterious nutrient called H2O. Although there is rigorous proof of its need for optimal health, scientists still have a difficult time objectively advising people how much they need to drink daily to maintain this favorable health. Most people can survive no more than 7 days without water (Williams, 2005). Because of its numerous and diverse functions in the body, it is often regarded as the most important nutrient. Water is colorless, tasteless and odorless. Water: The Science of Nature's Most Important Nutrient ![]()
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