Uriniferous tubule

Uriniferous tubule is a term used in anatomy and physiology to describe the functional unit of the kidney. It is composed of two main parts: the nephron and the collecting duct system.

Structure

The uriniferous tubule is a long, thin tube that begins in the renal cortex, extends into the renal medulla, and then returns to the renal cortex. It is composed of two main parts: the nephron and the collecting duct system.

Nephron

The nephron is the basic structural and functional unit of the kidney. Each nephron is composed of a renal corpuscle and a renal tubule. The renal corpuscle consists of a tuft of capillaries known as the glomerulus and a cup-shaped sac called the Bowman's capsule. The renal tubule extends from the Bowman's capsule and is divided into three main segments: the proximal convoluted tubule, the loop of Henle, and the distal convoluted tubule.

Collecting Duct System

The collecting duct system is responsible for the final modification of urine before it is excreted from the body. It is composed of the connecting tubule, the collecting duct, and the papillary duct. The collecting duct system receives urine from the distal convoluted tubule of multiple nephrons and carries it to the renal pelvis, from where it is excreted from the body.

Function

The uriniferous tubule plays a crucial role in the urinary system. It is responsible for the filtration of blood, reabsorption of water and essential nutrients, and secretion of waste products and excess ions. This process helps to maintain the body's homeostasis, regulating the balance of water and electrolytes, and removing waste products from the bloodstream.

Clinical Significance

Diseases and conditions that affect the uriniferous tubule can lead to serious health problems, including kidney disease and kidney failure. These conditions can be caused by a variety of factors, including diabetes, hypertension, and certain genetic disorders.

See Also

• Kidney
• Nephron
• Renal physiology
• Urinary system