This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'Factor which increases the GFR are all except: \nSelect and explain. \nA. Increase in glomerular hydrostatic pressure, B. Increase in tubular hydrostatic pressure, C. Efferent arteriolar constriction, D. Decrease in plasma oncotic pressure', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Factors affecting the glomerular filtration rate:\n\nChanges in renal blood flow.\nChanges in glomerular capillary hydrostatic pressure.\nChanges in systemic blood pressure.\nAfferent or efferent arteriolar constriction.\nChanges in hydrostatic pressure in Bowman’s capsule.\nUreteral obstruction.\xa0\nEdema of kidney inside tight renal capsule.\nChanges in concentration of plasma: dehydration, hypoprotinemia, etc (minor factors).\nChanges in K+\nChanges in glomerular capillary permeability.\nChanges in effective filtration surface area.\n\nKey Concept\nDecrease in tubular hydrostatic pressure increases the GFR.\nReference: Ganong’s Review of Medical Physiology T W E N T Y - F I F T H\xa0 \xa0E D I T I O N page no 679', 'role': 'assistant'}]