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Cholelithiasis refers to the formation of rock-like crystalline deposits (gallstones or biliary calculi) in the gallbladder. Development is insidious and may remain asymptomatic for years. The major component of most (approximately 85%) gallstones is cholesterol (cholesterol-predominant or "mixed" gallstones also containing calcium salts). These occur either as a solitary stone or multiple stones of varying sizes. Others stones (approximately 15%) are composed solely of calcium salts (calcium carbonate, calcium bilirubinate) or crystallized bile pigments (bilirubin). Pigment stones are more common in Asian than in Western populations.
The gallbladder stores bile, a fluid that is produced in the liver to aid in the digestion of fats. Normal bile is sterile and contains a high level of cholesterol, which usually remains in liquid form. When the bile contains too much cholesterol and/or levels of cholesterol and lecithin are imbalanced, the bile becomes supersaturated. When this occurs, solid crystals of cholesterol and calcium salts form and settle out of the liquid bile creating sludge or gallstones. Other causes of cholelithiasis include production of bile that contains inadequate amounts of certain chemicals (phospholipids or bile acids) or blockage of the ducts carrying bile from the gallbladder to the intestine (biliary stasis). Obstruction can also lead to colonization of bile with bacteria, resulting in infection. Individuals with high heme turn over (e.g., cirrhosis, hemoglobinopathies including sickle cell disease, thalassemia, spherocytosis) are predisposed to bilirubin stones.
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What is the definition of acute polygons?
An acute polygon is one whose interior angles are all acute. Only a triangle can be an acute polygon.
Definition of acute angel FOR GRADE 4?
An acute angle is an angle less than 90°.
Which is a correct definition for an acute angle?
An acute angle is greater than 0 but less than 90 degrees
The definition and example of an acute triangle?
An acute triangle is also known as a scalene triangle that has 3 sides of different lengths and 3 interior acute angles of different sizes
What size is an a acute angle?
An acute angle by definition, is an angle that measures anywhere from 1º (or less) to 89º as long as it is smaller than a right angle (90º).
What is the geometric definition of a acute angle?
Acute < 90°
What is the definition of acute polygons?
An acute polygon is one whose interior angles are all acute. Only a triangle can be an acute polygon.
Definition of an acute angle?
An acute angle is defined as one that is less than 900.
Definition of acute angel FOR GRADE 4?
An acute angle is an angle less than 90°.
What is hepatitas A definition?
An acute infectious disease of the liver.
Which is a correct definition for an acute angle?
An acute angle is greater than 0 but less than 90 degrees
What is the definition of dimay?
Perhaps you mean "dismay", which is acute disappointment.
What is the definition of over acuteness?
Acute means sharp or severe. Acute pain would be very bad sharp pains.
The definition and example of an acute triangle?
An acute triangle is also known as a scalene triangle that has 3 sides of different lengths and 3 interior acute angles of different sizes
Does acute mean persisting for a long period of time?
No, acute is "right now" - it's the opposite of chronic. The definition you provided is for chronic. Acute = sudden and it can get serious very quickly.
Are low doses of acute alcohol consumption known to cause relief of anxiety?
The question does not make sense. Low doses of alcohol, by definition, are not acute.
What is the definition of acute angle?
An angle that had a measure equal to or less than 89 degrees.
