The membrane at C encloses a space containing a fluid derived from what?
The correct answer and explanation is:
The membrane at C encloses a space containing a fluid derived from blood plasma, typically referring to a structure in the kidney, such as the Bowman’s capsule. This capsule is part of the nephron, the functional unit of the kidney, which plays a crucial role in filtering blood to form urine.
The fluid derived from blood plasma in the Bowman’s capsule is called filtrate. This filtrate consists mainly of water, small molecules, ions, and waste products like urea, but lacks larger molecules such as proteins and blood cells, which are too large to pass through the filtration barrier. The filtration process occurs when blood enters the glomerulus, a network of capillaries inside the Bowman’s capsule. High pressure in the glomerulus forces the plasma portion of the blood across the glomerular filtration barrier, into the Bowman’s capsule, where it becomes filtrate.
The filtrate then passes through the proximal convoluted tubule, loop of Henle, distal convoluted tubule, and finally the collecting duct, where further processing occurs, such as reabsorption of water and vital ions, and secretion of waste into the urine. This process is vital for regulating the body’s fluid balance, electrolytes, and the removal of waste products.
Therefore, the fluid inside the space enclosed by the membrane at C is derived from blood plasma. This is a critical step in the formation of urine and maintaining homeostasis in the body, ensuring proper hydration, electrolyte balance, and the excretion of metabolic waste.