to increase the surface area for reabsorbtion
the three main portions of the renal tubule are the proximal convoluted tubule, the loop of henle, and the distal convoluted tubule. the proximal convoluted tubule is the first portion. The proximal (convulated) tubule.
The distal convoluted tubule or the collecting tube.
Proximal tubule
Proximal convoluted tubule, Loop of henle and Distal convoluted tubule.
Proximal convoluted tubules have brush borders or microvilli on the inner edge of the tubule. Distal convoluted tubules do not have this structure.
The proximal convoluted tubule drains into the loop of Henle.
The twist in the proximal convoluted tubule increases its surface area for reabsorption of water and solutes from the filtrate in the kidneys. This allows for more efficient processing of substances and helps maintain the body's water and electrolyte balance.
The parts of a nephron in order are the renal corpuscle (glomerulus and Bowman's capsule), proximal convoluted tubule, loop of Henle (descending and ascending limbs), distal convoluted tubule, and collecting duct.
The proximal convoluted tubule is closest to the glomerular capsule. The distal convoluted tubule is farther away.
The proximal convoluted tubule
In the proximal convoluted tubule
Tubular secretion occurs in the distal convoluted tubes. The secretion also happens in the collecting ducts and also in the proximal convoluted tubule.