Hormone responsible for increasing the water permeability of

Hormone responsible for increasing the water permeability of collecting duct is Aldosterone Thyroxine ADH Diuretic hormone supplies blood to the glomerulus. Afferent arteriole Efferent arteriole Peritubular capillaries PCT Glomerular filtration is a passive process True False Tubular reabsorption moves filtrate back to the blood True False Tubular secretion is the reverse of tubular reabsorption True False Glomerular filtration rate varies from 90 to 150 ml/min 80 to 120 ml/min 100 to 150 ml/min 80 to 140 ml/min Glomerular filtration rate can be altered by Changing arteriole resistance or hydrostatic pressure Changing arteriole resistance and hydrostatic pressure Oncotic pressure and efferent resistance drains glomerular capillary bed. Afferent arteriole Efferent arteriole Peritubular capillary Starling forces are Hydrostatic pressure and blood pressure Oncotic pressure and hydrostatic pressure None of the above Constant glomerular filtratio

Solution

24. Hormone (c) ADH increases the water permeability of the renal collecting duct and hence, is responsible for the reabsorption of water from the collecting duct.

25. (a) Afferent arteriole supplies blood to the capilaries of glomerulus whereas, the efferent arteriole collects blood from the capilaries of the glomerulus.

26. Glomerular filteration is a passive process because it does not require ATP.

27. Tubular reabsorption moves only the essential solutes and water from the filterate back to blood. Not the entire filterate.

28. True

29. According to the National Kidney Foundation, normal results range from 90 to 120 mL/min/1.73 m2. However, with age, normal the GFR can be as low as 60 to 120ml/min. But the higher amount of filterate can be an alarming sign. Hence according to options mentioned in the question, the normal GFR range can be considered to be the option (d) 80 to 140 ml/min considering the aged people.

30. GFR can be altered by changing (a) Afferent arteriole resistance or the hydrostatic pressure.

31. (b) Efferent arteriole drains glomerular cappillary bed because it collects blood from the glomerulus.

32. Starling forces are (b) hydrostatic forces and oncotic forces according to the starling equation

33. constant GFR is (b) 125 ml/min