August 7th, 2017 The Odyssey by: Homer

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Directions: ANSWER USING COMPLETE SENTENCES! Use the information you have been given to answer questions about: The Excretory System: The function and structure of the Nephron.

*To improve your MATH SKILLS spend at least 20 minutes practicing them using IXL.COM. (REMEMBER TO ENTER YOUR USER NAME AND PASSWORD WHEN LOGGING ON! THAT WILL BE PROOF THAT YOU DID IT!)

Level#1

Nephrons are small tubes that remove extra water, salt, and other waste materials from the blood. Each nephron has a cup-like structure at one end. Inside of this structure, blood flows through the many coiled capillaries where the wastes are removed.

1. What do nephrons do?





2. What does each nephron have at one end?






3. What flows through the nephron?









Level#2

Nephrons are small tubes that remove extra water, salt, and other waste materials from the blood. Each nephron has a cup-like structure at one end. Inside of this structure, blood flows through the many coiled capillaries where the wastes are removed. The filtered materials pass into a cup-like structure. Then, nutrients pass from a tubule back into the blood. Extra water, salts, and waste molecules combine to form urine.

1. What happens inside the cup-like structure of each nephron?







2. What happens to the nutrients that have passed into the cup-like structure?








3. What are the things that combine to form urine?

Level#3

Nephrons are small tubes that remove extra water, salt, and other waste materials from the blood. Each nephron has a cup-like structure at one end. Inside of this structure, blood flows through the many coiled capillaries where the wastes are removed. The filtered materials pass into a cup-like structure. Then, nutrients pass from a tubule back into the blood. Extra water, salts, and waste molecules combine to form urine. Urine is concentrated in a thin, looped tube. The filtered blood is then returned to the heart in veins. The urine then empties into the last part of the nephron called the collecting duct. Urine flows through ureters to the bladder. It is stored there until it is released through the urethra.

1. Explain what goes on inside the cup-like structure at the end of each nephron.








2. Explain what happens to the blood after it is filtered.








3. Completely explain all the steps of what happens to the urine after it is formed.












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