1 / 10

Excretory System

Excretory System. Anatomy & Physiology Mrs. Halkuff. Kidney Location. Located near on the left & right sides of the vertebral column at the small of the back. Kidneys are 4” long & 2.5” wide. Left kidney sits higher than the right due to the large size of the liver. Kidney Physiology.

imala
Download Presentation

Excretory System

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Excretory System Anatomy & Physiology Mrs. Halkuff

  2. Kidney Location • Located near on the left & right sides of the vertebral column at the small of the back. • Kidneys are 4” long & 2.5” wide. • Left kidney sits higher than the right due to the large size of the liver.

  3. Kidney Physiology • Excretion of waste products • Maintenance of homeostasis in the body • Balance of water in the blood. • Balance of electrolytes in the blood. • Regulates pH of blood. • Release of important hormones

  4. Kidney Anatomy • Outer Cortex • Inner Medulla • Renal Artery: Receives oxygenated blood • Renal Vein: Removes deoxygenated blood • Nephrons: Make urine

  5. Nephrons • Major functional unit • Makes urine by: • Filtering blood of water, salt, glucose & urea • Reabsorbing useful solutes back into the blood stream. • Allowing waste molecules to filter into ureters.

  6. Kidney Hormone Function • Aldosterone: Increases reabsorption of ions & water in the kidney. • Erythropoietin: Acts on bone marrow to increase production of red blood cells. • Calcitriol: Promotes the absorption of calcium from the food in the intestines and acts directly on bones to shift calcium into the blood stream.

  7. Ureters • 12 inch slender tubes that connect the kidneys above to the urinary bladder. • Transport urine to the bladder • Ureters contain smooth muscle tissue and about every 30 seconds, peristaltic contraction sends urine to bladder! • Uretal openings are slit-like, to prevent backflow of urine into kidney

  8. Bladder • Muscular sac that temporarily stores urine. • Connects to the urethra • Can hold up to 1 liter of urine • Has an internal & external sphincter

  9. Urethra • Thin-walled tube that carries urine from the bladder to the outside of the body. • Located above the vaginal opening in females (1 inch in length) • Serves to carry urine and sperm out of the penis in males (7-8 inches in length) • Micturition: The act of urinating.

  10. Disorders • Urinary Tract Infections: Bacteria invades the urethra & bladder. Much more common in females than males because it is shorter and positioned closer to the anus. • Kidney Stones: Calcium deposits, magnesium salts, or crystal of uric acid can form solids within the kidney or ureters. • Incontinence: Inability to control urination • Babies, women after birth, elderly

More Related