Excretory System

Discover the amazing excretory system! Learn how your body filters waste, stays hydrated, and keeps healthy with this science worksheet.

The main function is to filter blood and remove liquid waste from the body.Works with the circulatory, respiratory, endocrine, and integumentary. systems to maintain a balance homeostasis of water, ions pH, blood pressure, calcium and red blood cells in the body. Kidneys The main purpose of the kidneys is to filter _ products out of the blood that passes through them. nutrients waste blood Blood enters through renal arteriesand passes back to circulation through the renal veins. Works with the endocrine system in the formation of red blood cells and the circulatory system to remove waste from the blood. Ureters Muscular tubes that carry urine from the kidneys to the bladder.25-30 cm in length Inner diameter about 3mm Bladder Pear shaped organ that holds urine to allow for urination to be infrequent and voluntary.Capacity - 400-600mlEmptying bladder takes place by concentration of smooth muscles (detrusor) Urethra Passage way through which urine is discharged from the bladder out of the body.Longer in the male than femaleAverage daily output of urine is 1.0-1.5 liters Accessory Organsnot part of the path of urine, but play a part in removal of waste. Liver filters blood from the digestive tract Lungs remove CO2 (waste product) so it can be exhaled Skin secretes a fluid waste called sweat or Prespiration Hydration Water makes up half of your body weight.You lose water when you go to the bathroom, sweat, and breathe.If you don’t replace the water you lose you become dehydrated. Symptoms of DehydrationLittle to no urine or darker urine than usual To mark a word click its first letter then click its last. SLEEPINESS CONFUSION DIZZINESS HEADACHE FATIGUE Diseases/ Disorders of the Excretory System Urinary tract infection - UTIKidney stones - obstruction of the urinary tractCystic kidney disorderCirrhosis of the liverKidney failureCancers of Kidney, bladder, ureter, prostate