Question

Glomerular filtrate is :

• A. Blood minus blood corpuscles and plasma protein
• B. Blood minus corpuscles
• C. Mixture of water, ammonia and corpuscles
• D. Urine

Answer 1

The correct option is A Blood minus blood corpuscles and plasma protein

The glomerular ultrafiltrate has the same composition as blood plasma ( i.e blood minus blood corpuscles) but it is normally free of protein (except for about 10 mg/dl of low-molecular-weight protein). Some of the filtered products include water, glucose, electrolytes, amino acids, urea, uric acid, creatinine, and ammonia. As the glomerular filtrate passes through the proximal tubules, a large portion of the water, glucose, amino acids, sodium chloride, bicarbonate, potassium, calcium, phosphate, and other threshold substances needed by the body are reabsorbed and pass back into the bloodstream. Thus glomerular filtrate is blood minus blood corpuscles and plasma protein.

Glomerular filtrate is the fluid in the lumen of the Bowman’s capsule of the nephron that has been filtered from the capillaries of the glomerulus. It has the same composition as blood plasma and free of protein. As the glomerular filtrate passes through the proximal tubules, a large portion of water, glucose etc. and other substances by the body are reabsorbed and pass back into the blood stream.

So, the correct answer is option A.