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Circulatory System.

Let’s Review the . Circulatory System. Take out your notes… . The Circulatory System. What makes up the circulatory system? What is the MAJOR purpose of RBC’s? (Red blood cells) What are the main functions of the circulatory system? How does blood flow in the heart and body?

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Circulatory System.

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  1. Let’s Review the Circulatory System. Take out your notes…

  2. The Circulatory System • What makes up the circulatory system? • What is the MAJOR purpose of RBC’s? (Red blood cells) • What are the main functions of the circulatory system? • How does blood flow in the heart and body? • How do arteries differ from veins? • Why are the capillaries special?

  3. The Urinary System

  4. What comes to mind when thinking of the urinary …. • Nevermind. We aren’t going there. Here’s what you need to know: • Function • The Urinary system filters the blood to eliminate water salts and nitrogenous waste. • How does it get waste? • The Circulatory System accumulates waste as it travels through the body, and then delivers the waste products to the Urinary System

  5. Anatomy of the Urinary System Discuss with your partners the Pathway waste takes in the Urinary System!

  6. The Players in the Urinary System • Kidneys-filter blood to remove urea and other waste, and then restores correct balance of water and salt to blood. • Ureter-Carries waste to bladder • Bladder-holds urine until it is released from the urethra

  7. What takes out the trash? • The lungs remove carbon dioxide by exhaling. • The skin removes excess salt by sweating. • The urinary system eliminates chemical waste such as urea. Urea is the main component of urine and comes from ammonia.

  8. Urine is made up of Cellular Waste Products

  9. Let’s take a closer look at the KIDNEY. • The functioning unit of the kidney is the nephron.

  10. The nephron and glomerulus • With your group members, reread pages 242-243, and answer these questions: • What is the function of the nephron? • Describe the glomerulus’ structure and function. • What is a filtrate? • Sketch a nephron and label.

  11. Function of the Nephron • Nephrons are made of a capillary bed and collecting tubule. • The nephron is the functional unit of the kidney, responsible for the actual purification and filtration of the blood.

  12. Glomerulus’ Structure and Function • Located at one end of the nephron and is a knotlike group of capillaries • Aids in blood filtration

  13. Filtrate • Fluid in the nephron tubule that moves from collecting tube of nephron to ureter and then to bladder.

  14. Just in case you wanted to know… • What is a kidney stone? • A kidney stone is a solid piece of material that forms in a kidney when substances that are normally found in the urine become highly concentrated. A stone may stay in the kidney or travel down the urinary tract. Kidney stones vary in size. A small stone may pass on its own, causing little or no pain. A larger stone may get stuck along the urinary tract and can block the flow of urine, causing severe pain or bleeding.

  15. Quick Video • https://www.youtube.com/watch?v=lfGYd1wrTgE

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