What is the process by which plasma that has entered Bowman's capsule is filtered from the blood?

What is the process by which plasma that has entered Bowman's capsule is filtered from the blood?

• A. Glomerular filtration
• B. Tubular reabsorption
• C. Secretion
• D. Osmosis

Answer: (A)

Glomerular filtration is the process by which plasma entering the glomerulus is filtered into Bowman's capsule. The filtering barrier lets water and small solutes pass through while retaining larger proteins and blood cells. This happens because the hydrostatic pressure in the glomerular capillaries is higher than the pressure in Bowman's capsule, creating a net outward force that pushes fluid and solutes into the capsule. As a result, the filtrate contains water, ions, glucose, amino acids, and urea, but not large molecules or cells. Downstream, tubular reabsorption and secretion modify the filtrate, but they occur after filtration. Osmosis describes water movement across a membrane due to a gradient and is not the initial filtration step.

Glomerular filtration is the process by which plasma entering the glomerulus is filtered into Bowman's capsule. The filtering barrier lets water and small solutes pass through while retaining larger proteins and blood cells. This happens because the hydrostatic pressure in the glomerular capillaries is higher than the pressure in Bowman's capsule, creating a net outward force that pushes fluid and solutes into the capsule. As a result, the filtrate contains water, ions, glucose, amino acids, and urea, but not large molecules or cells. Downstream, tubular reabsorption and secretion modify the filtrate, but they occur after filtration. Osmosis describes water movement across a membrane due to a gradient and is not the initial filtration step.