Excretion Test - 3

In ornithine cycle, arginase enzyme is used to convert arginine to ornithine.

Both the hormones vasopressin and adrenalin influences the activity of kidney.

Glucose is taken back from glomercular filtrate through active transport.Active transport is the movement of molecules across a cell membrane in the direction against their concentration gradient, i.e. moving from an area of lower concentration to an area of higher concentration.

Glomerular filtrate contains less glucose in comparison to plasma.

Vasa recta are blood capillaries around the loop of Henle.Vasa recta are straight arteries coming off from arcades in the mesentery of the jejunum and ileum, and heading toward the intestines.

The reabsorption of water, glucose, potassium phosphate, bicarbonate and sodium by diffusion and active transport occurs in proximal convuluted tubule.

Reabsorption of chloride ions (Cl–) from the glomercular filtrate in the kidney tubule of mammals is carried out by diffusion.

In the kidney, glucose is mainly absorbed in the proximal convoluted tubule.

The filtration of blood plasma is done by glomeruli.A glomerulus is a network (as a tuft) of capillaries located at the beginning of a nephron in the kidney. It serves as the first stage in the filtering process of the blood carried out by the nephron in its formation of urine.

The canal into which vasa efferentia and nephrons pour their products is called as urinogenital tract.