Blood Pressure Drives the First Step in Urine Formation,called _____________________

Question

Blood pressure drives the first step in urine formation,called _____________________.  
A) tubular reabsorption
B) antidiaresis
C) tubular secretion
D) glomerular filtration
E) aldosterone processing

Accepted Answer

Glomerular filtration is the first step in urine formation, and it is driven by blood pressure. Blood flows into the glomerulus, which is a network of capillaries in the kidney, and the pressure of the blood forces fluid and small molecules out of the blood vessels and into the nephron, which is the functional unit of the kidney. This fluid is then modified as it flows through the nephron, eventually leading to the formation of urine. Tubular reabsorption, tubular secretion, and aldosterone processing are all subsequent steps in urine formation. Antidiuresis refers to a physiological process that reduces urine production, but it is not directly related to the initial step of glomerular filtration.