1. Consider the urinary system
(a) What are the three basic renal processes leading to urineformation?
(b) Consider the net filtration pressure (NFP) according to thefollowing information,
Glomerular blood hydrostatic pressure (GBHP): 90 mmHg
Capsular hydrostatic pressure (CHP): 35 mmHg
Blood colloid osmotic pressure (BCOP): 40 mmHg
Mean arterial pressure (MAP): 93 mmHg
(i) Calculate the net filtration pressure (NFP). Show yourcalculations.
(ii) Suppose a tumor is pressing on and obstructing the leftureter. What affect might
this have on CHP and thus on NFP in the left kidney? Would theright kidney
also be affected?
(c) Name the hormone that regulates plasma osmolarity. Brieflyexplain how the hormone
works in regulating plasma osmolarity and urine formation when thebody has an
increase in plasma osmolarity.
