ANATOMY

Detailed explanation-1: -Tubular reabsorption is the movement of substances into the blood from the filtrate.

Detailed explanation-2: -Tubular reabsorption is the process that moves solutes and water out of the filtrate and back into your bloodstream. This process is known as reabsorption, because this is the second time they have been absorbed; the first time being when they were absorbed into the bloodstream from the digestive tract after a meal.

Detailed explanation-3: -The correct answer is option (b) tubular reabsorption. Tubular reabsorption is the second step of urine formation which is highly regulated by the hormones aldosterone and arginine vasopressin (antidiuretic hormone or ADH).

Detailed explanation-4: -Most of the Ca++, Na+, glucose, and amino acids must be reabsorbed by the nephron to maintain homeostatic plasma concentrations. Other substances, such as urea, K+, ammonia (NH3), creatinine, and some drugs are secreted into the filtrate as waste products.

Detailed explanation-5: -Reabsorption is the movement of water and solutes from the tubule back into the plasma. Reabsorption of water and specific solutes occurs to varying degrees over the entire length of the renal tubule. Bulk reabsorption, which is not under hormonal control, occurs largely in the proximal tubule.