MEDICAL PHYSIOLOGY

Detailed explanation-1: -The filtrate flows from the proximal tubule and into the Loop of Henle. The loop of Henle concentrates the filtrate, by removing more water from it, and passes it to the distal tubule. From the distal tubule it travels to the collecting duct-now called urine.

Detailed explanation-2: -The first part is called the proximal convoluted tubule (PCT) due to its proximity to the glomerulus; it stays in the renal cortex. The second part is called the loop of Henle, because it forms a loop (with descending and ascending limbs) that goes through the renal medulla.

Detailed explanation-3: -The first part of the tubule absorbs amino acids, glucose, lactate, and phosphate; the whole convolution absorbs sodium, potassium, calcium, and chloride and, by removing bicarbonate, acidifies the fluid slightly.

Detailed explanation-4: -Connecting tubule It is adjacent to the distal convoluted tubule, the most distal segment of the renal tubule. Connecting tubules from several adjacent nephrons merge to form cortical collecting tubules, and these may join to form cortical collecting ducts (CCD).