Human Excretion and Kidney Physiology

Antidiuretic hormone is secreted from the posterior pituitary. Within hypothalamic neurons, the hormone is packaged in secretory vesicles with a carrier protein called neurophysin, and both are released upon hormone secretion.

The gallbladder is a small pear-shaped organ that stores and concentrates bile. The gallbladder is connected to the liver by the hepatic duct. It is approximately 3 to 4 inches (7.6 to 10.2 cm) long and about 1 inch (2.5 cm) wide. It is not an excretory organ.

The renal medulla is the innermost part of the kidney. The renal medulla is split up into a number of sections, known as the renal pyramids. Blood enters into the kidney via the renal artery which then splits up to form the arcuate arterioles

In the kidney, the loop of Henle (or Henle's loop or ansa nephroni) is the portion of the nephron that leads from the proximal convoluted tubule to the distal convoluted tubule. The loop has a hairpin bend in the renal medulla. The main function of this structure is to create a concentration gradient in the medulla of the kidney.

In the kidney, the loop of Henle is the portion of a nephron that leads from the proximal convoluted tubule to the distal convoluted tubule. Here water is re-absorbed.

This is where ultra-filtration takes place. Blood from the renal artery is forced into the glomerulus under high pressure. Most of the liquid is forced out of the glomerulus into the Bowman's capsule which surrounds it. 

Urophagia is the consumption of urine. There are various reasons that humans may consume urine. Urine was used in several ancient cultures for various health, healing and cosmetic purposes, practices which are still used by some people of these cultures today.

Lant is called the aged urine. Lant had many uses in pre-industrial households. Most often, it was used for cleaning floors. It was effective because of the ammonium content.

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

The kidneys are the primary organs responsible for osmoregulation, which involves maintaining the balance of water and mineral ions in the blood.

The hypothalamus regulates water balance by signaling the pituitary gland to release antidiuretic hormone (ADH), which increases water reabsorption in the kidneys.

Dialysis is a medical procedure used to filter waste products and excess fluid from the blood when the kidneys are unable to perform this function.

In the human body, deamination takes place primarily in the liver. Deamination is the removal of ammonia from the amino acids.

Vasopressin regulates the body's retention of water by acting to increase water reabsorption in the kidney's collecting ducts, the tubules which receive the very dilute urine, produced by the functional unit of the kidney, the nephrons.

Guanine is the excretory product in spiders .Excretion of guanine requires lesser amount of water hence it is secreted in spiders which have lower water content in them.