Human Excretion and Kidney Physiology

It is a large double walled cup. It lies in the renal cortex. It contains a tuft of capillaries called glomerulus and the outer wall is continuous, with the rest of the nephron. The space between the two walls of the Bowman's capsule is continuous, with the lumen of the next part of the nephron. The bowman's capsule and the glomerulus together constitutes the renal corpuscle or malpighian body.

Cfreatinine is not a nitrogenous waste in any of the above process.

It works on the principle of dialysis, which is the diffusion of small solute molecules, through a semipermeable membrane. The haemodialyzer consists of a cellophane tube suspended in a salt - water solution of the same composition, as the normal blood plasma, but without any urea present in it.

The spleen is an organ found in virtually all vertebrate animals,  with important roles in regard, to red blood cells and the immune system.

Bowman's capsule is the cup-shaped structure at the beginning of the nephron that collects the filtrate from the glomerulus.

Filtration of blood occurs in the glomerulus, which is enclosed within the Bowman's capsule. The capsule collects the resulting filtrate.

The collecting duct is the final part of the nephron that collects processed filtrate and delivers it to the renal pelvis, which then leads to the ureter. Other parts like the glomerulus and Bowman's capsule are involved in the initial filtration process.

The kidneys are located in the abdominal cavity, specifically in the retroperitoneal space at the back of the abdomen, one on each side of the vertebral column.

The primary mechanism for blood purification in the kidney is ultrafiltration, which occurs in the glomerulus. While reabsorption and secretion also occur, filtration is the initial and defining principle of blood purification.

The nephron is the microscopic structural and functional unit of the kidney, responsible for filtering blood and forming urine.

The urethra is the tube that carries urine from the urinary bladder to the outside of the body. The ureter connects the kidney to the bladder.

Urine produced in the kidneys is transported to the urinary bladder through the ureters. The urethra is the exit point from the body.

The ureters are the two tubes that carry urine from each kidney to the urinary bladder for storage.

Kidneys regulate the volume and composition of body fluids, including blood, by filtering out wastes and balancing electrolytes and water content.

Lungs are primarily involved in the excretion of carbon dioxide and water vapor, which are respiratory gases, not nitrogenous wastes. Skin, kidneys, and liver all play roles in processing or excreting nitrogenous waste.