High hydrostatic pressure in the glomerulus is created because

  1. the heart is close
  2. the efferent arteriole is narrower than the afferent arteriole
  3. the collecting duct is wide
  4. the renal vein is blocked
Answer

B) the efferent arteriole is narrower than the afferent arteriole

Narrow outflow builds pressure. AS & A Level Biology · Topic 14 Homeostasis · 14.1 Homeostasis in mammals

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