Question

Describe the events of filtration, reabsorption, and secretion in the kidney.

Answer 1

Answer : The events of filtration, reabsorption, and secretion in the kidney is responsible for maintaining osmolarity in our body.

1.Filtration is the process in which the blood is filtered by nephron which is the functional units of the kidney. Each nephron begins in a renal corpuscle, which is composed of a glomerulus enclosed in a bowmans capsule Cells, protein, and other large molecules are filtered out of the glomerulus by a process of ultra filtration, leaving an ultrafiltration that resembles plasma the ultra filtrate is passed through the proximal tubule, the loop of henle , the distal convoluted tubule and a senes of collecting duct to form urine
2. Reabsorption: tubular reabsorption is the process by which solutes and water are removed from the tubular fluid and transported into the blood because these substance have already been absorbed once.
this is a two step process, beginning with the active and passive extraction of substances from the tubule fluid into the renal interstitum and than the transport of these substances from the interstitum into the blood stream
3. secretion: tubular secretion is the transfer of material from peritubular capillaries to renal tubular lumen. secretion is caused by active transport, usually in a few substance are secreted. these substance are present in great excess or are natural poisons... Thanks dear student