ANATOMY

Detailed explanation-1: -The renal tubule is a long and convoluted structure that emerges from the glomerulus and can be divided into three parts based on function. The first part is called the proximal convoluted tubule (PCT) due to its proximity to the glomerulus; it stays in the renal cortex.

Detailed explanation-2: -The proximal convoluted tubule (PCT) is a segment of the renal tubule responsible for the reabsorption and secretion of various solutes and water. The PCT is located in the renal cortex, the outer part of the kidney, and is the first segment of the renal tubule, where it receives the filtrate from the renal corpuscle.

Detailed explanation-3: -The functional unit of the kidney is the nephron, which consists of a glomerulus from which a proximal convoluted tubule leads to a thin loop of Henle and then to a distal convoluted tubule. There are about 2 million nephrons per kidney.