Human Excretion and Kidney Physiology

Approximately 70-80% of all kidney stones are composed of calcium oxalate. This is the most common type of renal calculus. Pure calcium stones are less common than calcium oxalate stones. Sodium acetate and magnesium sulfate are not major components of kidney stones - these are chemical compounds unrelated to stone formation.

Hydrochloric acid (HCl) is secreted by parietal cells in the stomach lining, where it aids digestion and kills pathogens. The liver produces bile, the pancreas secretes digestive enzymes and bicarbonate, and kidneys filter blood.

Hepatitis is inflammation of the liver, commonly caused by viral infections (Hepatitis A, B, C, etc.), alcohol, or toxins. The liver is the primary organ affected. Heart conditions are cardiological, kidney diseases are renal, and stomach issues are gastrointestinal - none are directly related to hepatitis.

The kidneys do not hold liquid waste - they filter blood and produce urine, which then flows to the urinary bladder. The bladder is the storage organ that holds urine until it becomes full and signals the urge to urinate. The question describes the bladder's function.

Nephritis is the medical term for inflammation of the kidneys, from the Greek word 'nephros' meaning kidney. It can be caused by infections, autoimmune conditions, or toxins. The other options are made-up terms - 'Kidneyitis' uses English words, 'tubulitis' would refer to tubules not kidneys, and 'renalitis' mixes Latin and Greek roots incorrectly.

Dialysis is a procedure that artificially removes waste products and excess fluids from blood when kidneys fail to function properly. It is the primary treatment for kidney failure (renal failure), not heart weakness, brain diseases, or other conditions.

Cruorin is an outdated term for haemoglobin, the red pigment in blood responsible for oxygen transport. The name derives from Latin 'cruor' meaning blood or clotted blood.

The liver is the body's primary detoxification organ. It processes and neutralizes toxins, drugs, and metabolic waste products. The liver breaks down harmful substances and makes them excretable. The kidneys filter waste from blood (but don't process toxins like the liver), and the pancreas produces digestive enzymes and hormones - not detoxification.

ESRD stands for End Stage Renal Disease, the medical term for permanent kidney failure requiring dialysis or transplantation. Option A incorrectly uses 'Demography' (study of populations), B incorrectly uses 'Enumerative', and D incorrectly uses 'System' instead of 'Stage'.

Nephrons are the functional units of the kidney responsible for filtering blood and producing urine. They are found exclusively in the kidneys.

The kidneys are the primary organs responsible for filtering blood in the human body. They remove waste products, excess substances, and toxins from the blood to produce urine, while also maintaining electrolyte balance and blood pressure regulation.

Hepatic relates to the liver, coming from the Greek word 'hepar' meaning liver. Medical terms like 'hepatitis' (liver inflammation) and 'hepatology' (study of the liver) use the same root. The heart, brain, and kidney have their own prefixes: cardiac, cerebral, and renal.

Streptase (streptokinase) is a thrombolytic enzyme that dissolves blood clots by converting plasminogen to plasmin. It is used to treat acute myocardial infarction and other thrombotic conditions, including complications of coronary artery disease where blood flow is blocked by clots.

Dialysis is a medical procedure that artificially performs the kidney's function of filtering blood, removing waste products and excess fluids when kidneys fail. It is primarily used for end-stage renal disease or acute kidney injury where the kidneys can no longer function properly.

Bright's Disease is an archaic medical term for kidney inflammation, specifically affecting the glomeruli (filtering units) of the kidney. It's now classified under glomerulonephritis. The disease causes proteinuria (protein in urine), edema, and can lead to kidney failure. It does not primarily affect the brain, liver, or spinal cord.