The distal convoluted tubule or the collecting tube.
In the proximal convoluted tubule
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.
Proximal convoluted tubule, Loop of henle and Distal convoluted tubule.
Proximal 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.
No, creatinine is not actively reabsorbed by the proximal convoluted tubule. Instead, it is freely filtered at the glomerulus and excreted in the urine. The amount of creatinine excreted is used to estimate kidney function.
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
Tubular secretion occurs in the distal convoluted tubes. The secretion also happens in the collecting ducts and also in the proximal convoluted tubule.