Presentation on theme: "By: Jaleshia Edwards, Trazjon Slaughter, David Peralta"— Presentation transcript:
1By: Jaleshia Edwards, Trazjon Slaughter, David Peralta Excretory SystemBy: Jaleshia Edwards, Trazjon Slaughter, David Peralta
2Vocabulary Nephrons: the functional units of the kidneys Ureters: tubes that connect the kidneys to the bladderUrethra: the tube that leads from the bladder to the outside of the bodyCystitis: inflammation of the bladderUrethritis: inflammation of the urethraHemodialysis: a technique in which an artificial kidney machine removes waste products from the blood
3Continued… Lungs: expel when you breath Skin: as sweat evaporates on the surface of the skin, it cools the bodyLarge Intestine: solid wastes produced by the digestive system are eliminated
4Excretory System Removes waste from body Sweating is another form of excretionRemoves excess water & saltHelps regulate body temp.
5The Liver Removes certain toxins from blood 1st organ to receive chemicals absorbed from small intestineDetoxifies body by processing & excreting into bileex: drugs, alcohol, some cellular waste products
6Urinary System Consist of kidneys, bladder, ureters, & urethra Main function to filter waste & extra fluid from bloodUrine liquid waste material excreted from bodyConsist of water & body waste that contain nitrogen
7Kidneys Bean shaped organ size of a fist Near middle of back just below rib cage on each sideRemoves waste products from blood through tiny filtering units called nephrons
8Nephrons Each kidney contains more than a million nephrons Each nephron consists of a ball formed of small blood capillaries called aglomerulusAttached to small renal tubule that acts as a filtering funnelKidneys adjust amount of salts, water & other material excreted according to body’s needs
9The Ureters Tubes that connect kidneys to bladder Each Ureter is about 8 to 10 inches longMuscles in Ureter walls tighten & relax force urine down to bladder about every 15 seconds
10The Bladder & Urethra Hollow muscular organ in pelvic cavity Bladder held in place by ligaments attached to other organs & pelvic bonesStores about 2 cups of Urine from leakingSphincter muscles close tightly like a rubber band around opening of bladder into Urethra
11Maintaining Your excretory Health Drink at least 8-ounces of water each dayLimit intake of caffeine & soft drinks, can increase amount of water last through urinationFollow a well-balanced eating planPractice good hygiene to prevent harmful bacteria from causing infectionGet regular medical checkups. Report changes in bowel habits & in frequency, color, or odor of urine.
12Excretory System Problems Disorders of excretory system can have several different causesIncluding infection, blockage of urine, or natural agingTwo common disorders of urinary system are cystitis & UrethritisSymptoms of both conditions: burning pain during urination, increased frequency of urination, fever, & possibly blood in urineTreatment requires visit to doctor & may include antibiotics to eliminate infection
13Kidney ProblemsNephritis: inflammation of nephrons. Symptoms include a change in amount of urine produced, fever, & swelling of body tissuesKidney stones: form when salts in urine crystallize into solid stones. Can move in ureter causing pain. May also block passage of urine. Small stones may pass naturally. Large stones can be broke up using shock waves. Some cases require surgery.
14Continued…..Uremia: is a serious condition associated with decreased blood filtration by kidneys, leading to abnormally high levels of nitrogen waste products remaining in blood. Waste are poisonous to body cells & can cause tissue damage, or death if allowed to accumulate.
15Kidney failure Occurs when kidneys lose their ability to function. Can be caused by infection, decreased blood flow, or diseases that damage kidney tissue.Treatments: Hemodialysis; a machine that filters the blood. Takes 3 to 5 hours. Done 3 to 4 times per week.
16Continued…Peritoneal dialysis: uses peritoneum, a thin membrane that surrounds the digestive organs, to filter the blood. Substances that promote removal of toxins enter into abdomen through catheter & are drained after filtration is completeKidney transplant: option for chronic kidney failure. Involves replacement of a nonfunctioning kidney with a healthy kidney from a organ donor.