Kidney diagram with labels game quiz online



Kidney diagram for practice onlineThe human body has a pair of kidneys – bean-shaped organs that are integral in filtering harmful wastes from the blood and expelling them as urine. They are the main organ of the excretory system, which also includes the ureters, urinary bladder, and urethra. The kidneys are situated just underneath the ribs on either side of the spinal column.
Nephrons – long, coiling tubular structures – are the functional units of the kidney. They are the structures through which blood enters and gets rid of its waste products, such as salts, toxins, and excess water. In healthy adult humans, each of our kidneys can have just over one million nephrons.
Kidneys can be divided into three main sections – the cortex, renal medulla and renal pelvis. Solutes from the blood are removed at the cortex. These substances are collected alongside excess fluid to form urine at the renal pyramids of the medulla. Urine then flows into the renal pelvis, which funnels the liquid into a tube called the ureter which empties into the urinary bladder.
This kidney diagram with labels can be an informative visual aid, illustrating the structure and function of the kidney and its role in preserving homeostasis by excreting waste substances from the blood.

Learn how to label a kidney: Parts and Functions

The kidneys are made up of several different parts, each with a specific function. These include:

  1. Renal cortex: The outer layer of the kidney, made up of a network of tiny blood vessels called glomeruli and tubules. The glomeruli filter the blood and the tubules reabsorb essential substances and return them to the circulation.

  2. Renal medulla: The inner layer of the kidney, made up of a series of cone-shaped structures called renal pyramids. The renal pyramids filter the blood and produce urine.

  3. Renal pelvis: The central cavity of the kidney, where urine collects before being transported to the ureter.

  4. Ureter: A tube that carries urine from the kidney to the urinary bladder.

  5. Urinary bladder: A muscular sac that stores urine until it is eliminated from the body through the urethra.

The main function of the kidneys is to filter waste products from the blood and excrete them in the urine. They also play a vital role in maintaining the balance of electrolytes in the body, such as sodium, potassium, and calcium, and in regulating blood pressure. The kidneys also produce hormones that help to stimulate the production of red blood cells and regulate blood pressure.