Ph post

pH is a measure of the acidity or basicity of an aqueous solution. Pure water is said to be neutral, with a pH close to 7.0 at 25 °C (77 °F). Solutions with a pH less than 7 are said to be acidic and solutions with a pH greater than 7 are basic or alkaline. pH measurements are important in medicine, biology, chemistry, food science, environmental science, oceanography, civil engineering and many other applications.

You can define pH in your own words and submit the optimal pH for the following anatomical features
• Blood: The pH of blood is usually slightly basic with a value of pH 7.365. This value is often referred to as physiological pH in biology and medicine.

• Extra Cellular Fluid:The extracellular fluid can be divided into two major subcompartments, interstitial fluid and blood plasma. The extracellular fluid also includes the transcellular fluid; making up only about 2.5 percent of the ECF.
Extracellular fluid (ECF) usually denotes all body fluid outside of cells. The remainder of the fluids are Intracellular Fluid:

• Lysosomes:The pH within the lysosome is about pH 5, substantially less than that of the cytosol (~pH 7.2). All the enzymes in the lysosome work best at an acid pH. This reduces the risk of their digesting their own cell if they should escape from the lysosome.

• Stomach Acid:also known as gastric acid, is the primary digestive agent in the body. Dr. Ronen Arai, writing for YourTotalHealth.com, says stomach acid is designed "to help break down foods and aid digestion." Consequently, stomach acid is most effective in digestion when it has a low pH level, making it highly acidic. Incorrect pH and abnormal levels of stomach acid can lead to medical complications, including acid reflux, ulcers and gastritis (stomach inflammation).

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Pancreatic Digestive Juices:is alkaline in nature due to the high concentration of bicarbonate ions. This is useful in neutralizing the acidic gastric acid, allowing for effective enzymic action.

Pancreatic juice secretion is regulated by the hormones secretin and cholecystokinin, which is produced by the walls of the duodenum upon detection of acid food, proteins and fats. Pancreatic secretion consists of an aqueous bicarbonate component from the duct cells and enzymatic component from the acinar cells.

Also, please supply some information for interpreting how urine pH translates to the pH of the Blood Stream.

Urine, clear, amber-colored fluid formed by the kidneys that carries metabolic wastes out of the body (see urinary system). As the blood circulates it collects excretory products from the tissues and these substances are separated from the blood by the kidneys and eliminated chiefly in the urine.

The urine is then stored in the bladder and passes out of the body via the urethra. The amount passed depends on fluid intake and other factors. Urine is 95% water, in which are dissolved urea, uric acid, creatinine, and other waste products.

Normal urine also contains small amounts of substances ordinarily utilized by the body, such as sodium, potassium, and calcium; these substances are excreted by the kidneys when excessive amounts are present in the bloodstream. Analysis of the urine is important in detecting diseases of the urogenital organs, as well as disorders of other body systems.

Read more: http://www.answers.com/topic/urine#ixzz1BpUFB1ou
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