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Excretory System. Excretion. Excretion is the process of removing metabolic waste. Types of Cells: Podocytes, Endothelial, and Mesangial (all found in enthrones) Organs: Lungs, Kidneys, and Skin Tissues: Exocrine Glandular Tissue- Produces secretions such as sweat and mucus. Importance.

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excretion
Excretion
  • Excretion is the process of removing metabolic waste.
  • Types of Cells: Podocytes, Endothelial, and Mesangial (all found in enthrones)
  • Organs: Lungs, Kidneys, and Skin
  • Tissues: Exocrine Glandular Tissue- Produces secretions such as sweat and mucus
importance
Importance
  • The Excretory System is important because it removes waste from the body that can be dangerous
  • As a whole, it helps maintain homeostasis within other organisms and is responsible for removing waste products of metabolism
epidermis
Epidermis
  • The epidermis is the outer surface layer of cells of a plant or animal
roles of organs
Roles of Organs
  • Kidneys- primary excretory organs of the body. They also play an important role in maintaining homeostasis of body fluid.
  • Lungs:- primary site of carbon dioxide excretion. The lungs carry out detoxification. This changes the harmful substances so that they are not poisonous.
  • Skin- helps kidneys control the salt composition of the blood. Waste and other substances are excreted through perspiration.
kidneys
Kidneys
  • Kidneys are the main organs of the urinary system and regulates the chemical composition of the body and the excretion of water dissolving waste.
kidneys cont
Kidneys (cont.)
  • The structure of the kidney has three main parts:
    • The renal cortex
    • The renal medulla
    • The renal pelvis
urine and urea
Urine and Urea
  • Muscular contractions of the bladder force urine out of the body through a tube called the urethra.
  • Urea is a nitrogenous product made by the liver.
nephron
Nephron
  • Urine is made in structures called nephron, which are tiny tubes in the kidney.
  • Bowman’s capsule: retains cells and large molecules and passes wastes dissolved in water through the nephron
  • Inside each Bowman’s capsule a network of capillaries called glomerous is formed
  • Nutrients travel through the nephron and are absorbed in the bloodstream
circulatory system
Circulatory System
  • The circulatory is made up of the cardiovascular system and lymphatic system
  • Systematic circulation is the movement of blood between the heart and rest of the body. It supplies blood to the kidneys where wastes are filtered and removed.
peristalsis
Peristalsis
  • Peristalsis is the series of muscular contractions through the digestive tract
slide13
Bile
  • Bile is a bitter-tasting dark green fluid.
  • It helps the digestion of lipids in the small intestine
  • It is produced in the liver of most vertebrates
duodenum
Duodenum
  • Duodenum is the first section of the small intestine
  • It is responsible for the breakdown of food in the small intestine with help from enzymes
  • It also regulates the rate of emptying the stomach using the hormonal pathways
kidney disorder
Kidney Disorder
  • Alcoholism- destroys the balance of ions and water in the body by altering the filtering ability of the kidney.
additional information
Additional Information
  • The liver produces 6,500 ounces of bile in the average persons lifetime
  • The vein that leads to your kidney is the longest in the body
  • Kidneys also produce vitamin D which promotes strong bones and keeps blood pressure at a healthy level
bibliography
Bibliography
  • http://www.clccharter.org/donna/medschool/systems/system%20research/excretory/excretory.htm
  • http://scienceray.com/biology/human-biology/human-body-the-excretory-system/
  • http://www.comprehensive-kidney-facts.com/excretory-system.html
  • http://www.medindia.net/know_ur_body/anatomy-of-urinary-system.asp
  • http://www.fi.edu/learn/heart/systems/excretion.html