# data[].attributes.body
waste disposal, the collection, processing, and recycling or deposition of the waste materials of human society. Waste is classified by source and composition. Broadly speaking, waste materials are either liquid or solid in form, and their components may be either hazardous or inert in their effects on health and the environment. The term waste is typically applied to solid waste, sewage (wastewater), hazardous waste, and electronic waste.

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The presence of water in and around body tissues helps defend the body against shock. The brain, eyes and spinal cord are among the body's sensitive structures that depend on a protective water layer. Water also acts as a shock absorber and it enhances the function of nerve cells. It also protects sensitive compounds inside the cell from thousands of chemical reactions occurring nearby. Water is also the lubricant that helps in the smooth movement of our joints and allows their surfaces to slide and glide with minimal friction. Without water, movement of any joint becomes stiff, painful, and eventually impossible.

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Drinking water during or after a meal helps how your body breaks down and processes food (digestion). Water is vital for good health. Water and other drinks help break down food so that your body can take in (absorb) the nutrients. Water also makes stool softer, which helps prevent constipation.

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homeostasis is achieved by regulation of water intake and water loss by the kidneys. The former is achieved by sensations of thirst that motivate water acquisition, whereas the latter is regulated by the antidiuretic action of vasopressin. Vasopressin secretion and thirst are stimulated by increases in the osmolality of the extracellular fluid as well as decreases in blood pressure and/or blood volume, signals that are precipitated by water depletion associated with the excess evaporative water loss required to prevent hyperthermia. In addition, they are stimulated by increases in body temperature. The sites and molecular mechanisms involved in integrating thermal and osmotic regulation of thirst and vasopressin secretion are reviewed here with a focus on the role of the thermal and mechanosensitive transient receptor potential-vanilloid (TRPV) family of ion channels.

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Osmoregulation is the process of maintaining salt and water balance across membranes within the body. The fluids inside and surrounding cells are composed of water, electrolytes, and nonelectrolytes. An electrolyte is a compound that dissociates into ions when dissolved in water. A nonelectrolyte, in contrast, does not dissociate into ions in water. The body’s fluids include blood plasma, fluid that exists within cells, and the interstitial fluid that exists in the spaces between cells and tissues of the body. The membranes of the body are semipermeable membranes. Semipermeable membranes are permeable to certain types of solutes and to water, but typically cell membranes are impermeable to solutes.