PATHOLOGY

Detailed explanation-1: -The proximal convoluted tubule is involved in the reabsorption of water, sodium ions, chloride ions, and sugar from the glomerular filtrate.

Detailed explanation-2: -In the nephron, selective reabsorption occurs in the proximal convoluted tubule because it is highly permeable.

Detailed explanation-3: -Glucose, amino acids, NaCl and other essential salts are reabsorbed in the second step of urine formation i.e Tubular Reabsorption. These essential substances are filtered from blood in the first step called glomerular filtration and are reabsorbed as they are vital for body function.

Detailed explanation-4: -Water reabsorption is a main function of the large intestine.