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Excretory system. By Gregory Jones and Francis O’Brien. What is the Excretory System. The excretory system, also known as the urinary system, gets rid of any liquid or gas waste. The excretory system includes: 2 kidneys t he bladder 2 ureters t he urethra. Kidneys. - PowerPoint PPT Presentation
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By Gregory Jones and Francis O’Brien
What is the Excretory SystemThe excretory system, also known as the
urinary system, gets rid of any liquid or gas waste.
The excretory system includes:2 kidneysthe bladder2 uretersthe urethra
Kidneys
Kidneys filter waste out of the blood.Blood enters the kidneys through the renal
artery, and exits out through the renal vein.Any waste collected flows down the renal hilus
to the ureter, and eventually to the bladder.
Kidneys Waste is filtered in the glomerulus, found in
the renal cortex of each kidney. Blood stays in the artery, but waste filters
out of the glomerulus into Bowman’s capsule.Waste exits Bowman’s capsule into the urine
collecting duct, which leads to the renal hilus.
Kidneys
BladderThe bladder is where urine is stored until
ready to be excreted.Urine flows into the bladder via the ureters,
and exits out via the urethra.An average adult male bladder can hold 17 fl
oz.
BladderThe bladder stretches like a balloon as it fills
with urine.When full, the bladder sends nerve signals to
the brain.To release urine, the external sphincters
relax, opening up the end of the bladder, allowing urine to release.
Bladder
Video
Excretory DisordersIncontinence: When the body doesn’t have control
of the sphincters, causing urine to leak out.Kidney Stones: When salt and calcium crystalize
in the kidney, which can lead to an infection.Bladder Tumors: Usually caused from smoking,
can lead to difficulty urinating, infection, or hematuria, which is when blood is found in urine.
Polycystic Kidney (PKD): When pockets of fluid form inside one or both kidneys, causing them to irregularly enlarge, and lose the ability to filter blood.
Bladder Tumor
Kidney Stone
PKD
Pictureshttp://alexandria.healthlibrary.ca/documents/notes/bom/uni
t_2/ribkid_images/no1.gif
http://www.womenshealthzone.net/bladder/urinary-incontinence/anatomy-physiology/img/1036.gif
http://www.sciencephoto.com/image/255105/530wm/M1340545-Bladder_cancer,_X-ray-SPL.jpg
http://www.theloosh.com/blog/wp-content/uploads/2012/03/Kidney_Stones_Diagram.jpg
http://images.medicinenet.com/images/Government/PolycysticKidney.jpg
http://biochem.co/wp-content/uploads/2010/01/urinary-system-diagram.jpg
