HISTOLOGY
URINARY SYSTEM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Filtration, secretion, selective reabsorption, excretion
|
|
|
Excretion, filtration, selective reabsorption, secretion.
|
|
|
Filtration, selective reabsorption, Excretion, secretion
|
|
|
Filtration, selective reabsorption, secretion, Excretion.
|
Detailed explanation-1: -Urine formation takes place in three steps namely, glomerular filtration, selective reabsorption and tubular secretion. In the first step, blood containing nitrogenous wastes is filtered through a tuft of capillaries called glomerulus. This is followed by selective reabsorption of glucose, amino acids etc.
Detailed explanation-2: -Urine formation occurs in three main stages in the kidney. The first is filtering things out of the blood and into the filtrate. The next is reabsorbing the important stuff from the filtrate. Finally, anything that needs to be shipped right out of the body is secreted out.
Detailed explanation-3: -So, the correct answer is ‘Kidney–>Ureter–>Bladder–>Urethra’.
Detailed explanation-4: -Selective reabsorption is the process whereby certain molecules (e.g. ions, glucose and amino acids), after being filtered out of the capillaries along with nitrogenous waste products (i.e. urea) and water in the glomerulus, are reabsorbed from the filtrate as they pass through the nephron.