More information about the ureters, bladder, and urethra is provided in the NIDDK health topic, The Urinary Tract and How It Works .

The kidneys are important because they keep the composition, or makeup, of the blood stable, which lets the body function. They

The kidney is not one large filter. Each kidney is made up of about a million filtering units called nephrons. Each nephron filters a small amount of blood. The nephron includes a filter, called the glomerulus, and a tubule. The nephrons work through a two-step process. The glomerulus lets fluid and waste products pass through it; however, it prevents blood cells and large molecules, mostly proteins, from passing. The filtered fluid then passes through the tubule, which sends needed minerals back to the bloodstream and removes wastes. The final product becomes urine.

The renal hilus is an indentation near to the centre of the concave area of the kidney. This is the area of the kidney through which the ureter leaves the kidney and the other structures including blood vessels (illustrated), lymphatic vessels, and nerves tenter/leave the kidney.

The renal capsule is a smooth, transparent, fibrous membrane that surrounds, encloses, and protects the kidney. Each kidney has it's own renal capsule (outer layer), which helps to maintain the shape of the kidney as well as protecting it from damage.

The renal capsule is itself surrounded by a mass of fatty tissue that also helps to protect the kidney by damage by cushioning it in cases of impact or sudden movement.

More information about the ureters, bladder, and urethra is provided in the NIDDK health topic, The Urinary Tract and How It Works .

The kidneys are important because they keep the composition, or makeup, of the blood stable, which lets the body function. They

The kidney is not one large filter. Each kidney is made up of about a million filtering units called nephrons. Each nephron filters a small amount of blood. The nephron includes a filter, called the glomerulus, and a tubule. The nephrons work through a two-step process. The glomerulus lets fluid and waste products pass through it; however, it prevents blood cells and large molecules, mostly proteins, from passing. The filtered fluid then passes through the tubule, which sends needed minerals back to the bloodstream and removes wastes. The final product becomes urine.

More information about the ureters, bladder, and urethra is provided in the NIDDK health topic, The Urinary Tract and How It Works .

The kidneys are important because they keep the composition, or makeup, of the blood stable, which lets the body function. They

The kidney is not one large filter. Each kidney is made up of about a million filtering units called nephrons. Each nephron filters a small amount of blood. The nephron includes a filter, called the glomerulus, and a tubule. The nephrons work through a two-step process. The glomerulus lets fluid and waste products pass through it; however, it prevents blood cells and large molecules, mostly proteins, from passing. The filtered fluid then passes through the tubule, which sends needed minerals back to the bloodstream and removes wastes. The final product becomes urine.

The renal hilus is an indentation near to the centre of the concave area of the kidney. This is the area of the kidney through which the ureter leaves the kidney and the other structures including blood vessels (illustrated), lymphatic vessels, and nerves tenter/leave the kidney.

The renal capsule is a smooth, transparent, fibrous membrane that surrounds, encloses, and protects the kidney. Each kidney has it's own renal capsule (outer layer), which helps to maintain the shape of the kidney as well as protecting it from damage.

The renal capsule is itself surrounded by a mass of fatty tissue that also helps to protect the kidney by damage by cushioning it in cases of impact or sudden movement.

Your kidneys are paired organs found on each side of the back portion of the abdominal cavity. The larger left kidney is located a bit higher than the right kidney. Unlike other organs found in the abdomen, the kidneys are located behind the lining (peritoneum) of the abdominal cavity, thus they are considered retroperitoneal organs. These bean-shaped organs are protected by the back muscles and the ribs, as well as the fat (adipose tissue) that surrounds them like a protective padding. Learn more about the kidney structures and functions from this short article.

The bean-shaped kidneys have an outer convex side and an inner concave side called the renal hilus, where the renal artery, vein, and ureter are found.

A thin connective tissue called the renal capsule surrounds each kidney. This capsule maintains the kidneys' shape and protects the inner tissues.


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