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Transcript of Urinary System
Cava Nephron Pyramids The kidneys are each about the size of a human fist and filter about 180 liters of blood plasma every day. They contain one to two million nephrons which assist in the filtration of blood. One may survive and live a healthy, normal life with only one kidney. What is it? A nephron is a functioning unit of a kidney. Major parts of a nephron? regulates the composition of chemical body fluids
removes body waste through blood filtering. The Renal Cortex Medulla Renal Pelvis How is it a functioning unit? Abdominal
Aorta Ureter Each ureter extends from the renal pelvis of the kidney to the bladder. Its main function is to transport filtered waste from the nephrons (collected in the pelvis) to the bladder. As this is happening, toxic wastes are getting disposed.... And water and nutrients are absorbed back into the system! BLADDER The bladder is a smooth muscular sac that can hold up to 1 L of urine. When it becomes full, nerves are stimulated and cause the urge to urinate. Urination is caused by a voluntary contraction of sphincter muscles which allows urine to travel.... Blood is filtered into the nephrons. D
N the urethra and out! Example!! WOMEN vs. MEN The urethra in a woman is about 1-1 1/2 inches long and exits through the vulva. In men, the urethra is about 8 inches long and runs through the penis. Ready for big words? The Circles of Facts. Each part has a significant function in urine production. Renal corpuscle Proximal Convulated
Tubule Loop of Henle Distal Convulated
Tubule Critical Region where filtrate is further adjusted for water and solute balance. Tangled network of about 50 capillaries called glomerulus where filtration occurs. How does filtration occur?
Blood pressure in the capillaries forces water and dissolved substances out of the capillaries and into the renal tubule Starts at the glomerulus and continues into the Loop of Henle.
About 65% of original filtrate is reabsorbed in the proximal convulated tubule. Removes additional water from filtrate until final concentration of urine is approximately equal to that of the body fluids. Dialysis Treatment that uses artificial membranes to filter out toxins from the blood when a person's kidneys have failed. Hemodialysis Hemodialysis Also known as Kidney Dialysis
Used when kidneys are not functioning or are improperly functioning Peritoneal Dialysis Catheter is used to fill your abdomen with a cleansing liquid called dialysis solution.
This process of draining and filling your abdomen takes about 30-40 minutes Principles of Dialysis Works cited http://kidney.niddk.nih.gov/kudiseases/pubs/peritoneal/
Balaban, Naomi E., and James E. Bobick. The Handy Anatomy Answer Book. Detroit: Visible Ink, 2008. Print
Gray, Henry, T. Pickering Pick, and Robert Howden. Anatomy, Descriptive and Surgical. New York: Bounty, 1977. Print.
Gerdin, Judith. Health Careers Today. 3rd ed. St. Louis: Mosby, 2003. 230-36. Print Bladder and structures 1. Ureter
3. Smooth Muscle
7. Urogenital Diaphragm
8. External Sphincter
9. Internal Sphincter
10. Openings of Ureters Each Kidney receives blood from a renal artery. After circulating through kidneys and nephrons, the blood is collected into the ... Kidney Stones Renal Calculi
Precipitates of substances like uric acid, calcium oxilate, calcium phosphate, and magnesium phosphate that form in renal pelvis
Causes severe pain when passed through the Ureter
50% pass through the body on their own
Used to be removed surgically but now they are shattered by soundwaves (Lithotripsy)
Stones may form in Ureter or Bladder as well The exact time needed for dialysis depends on:
How well the kidneys are functioning
The amount of fluid retained
The amount of waste present in the blood
Type of artificial kidney used Urine Mostly water
Contains organic waste products
Dilute Urine is nearly colorless
Concentrated urine is a deep yellow
Other colors are not normal
Food pigments can make urine red
drugs can change color to browm, black, blue, green, or red
Colors can be changed from disease as well After blood is filtered through the nephrons, toxins (urine) collect in the
renal pelvis to exit through the ureter. Urinary Tract Infection UTIs occur primarily in women because of their anatomy. One major cause of a UTI in the bladder (cystitis) is E. coli. UTI in the urethra (urethritis) is mainly caused by GI bacteria and STDs. Symptoms constant urge to urinate
urine has a strong odor
urine is cloudy or pink
burning sensation during urination Treatment Normally, a UTI can be treated simply by taking antibiotics such as Amoxicillin.