The Excretory System3

  • 1,025 views
Uploaded on

 

  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to like this
No Downloads

Views

Total Views
1,025
On Slideshare
0
From Embeds
0
Number of Embeds
0

Actions

Shares
Downloads
12
Comments
1
Likes
0

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. Review Questions 1) What is osmosis? 2) Does a saltwater fish lose water from its body, or gain water? 3) Is saltwater a hypertonic or hypotonic solution for the fish? 4) Is your body in homeostasis right now? 5) Try to guess what the most important organ on a fish is for its osmoregulation. 6) What is a semi-permeable membrane?
  • 2. Student Question 1) How can an octopus know what color to change to? They do this using chromatophore and iridophore cells. Iridiphore cells can reflect what is beneath the octopus. I think these are voluntary AND involuntary responses.
  • 3. Lesson 3: Human Excretory System Organs and Function Foundation Science SC 22101
  • 4. Human Excretory System Organs 1) Kidneys 2) Skin 3) Lungs 4) Ureters 5) Urinary Bladder 6) Urethra 7) Liver* *Not really an excretory system organ
  • 5. Human Excretory System Organs The kidneys’ job is to take waste out of the bloodstream. They do this by making urine.
  • 6. Human Excretory System Organs The kidneys’ job is to take waste out of the bloodstream. They do this by making urine. Real kidney
  • 7. Human Excretory System Organs Kidneys also keep the correct amount of ions outside of the body’s cells so the body can maintain homeostasis.
  • 8. How do the Kidneys Work? 1) Blood with toxins in it is brought to the kidney by the aorta artery (red). Kidney
  • 9. How do the Kidneys Work? 1) Blood with toxins in it is brought to the kidney by the aorta artery (red). 2) Toxins are taken out of the blood and made into urine which empties to the bladder in ureters. Kidney
  • 10. How do the Kidneys Work? 1) Blood with toxins in it is brought to the kidney by the aorta artery (red). 2) Toxins are taken out of the blood and made into urine which empties to the bladder in ureters. 3) Clean blood is then sent out of the kidney in the vena cava vein (blue). Kidney
  • 11. Draw and Label Use BLUE and RED! Label the kidney, aorta, vena cava, renal arteries and veins, ureters, and bladder.
  • 12. How Does the Kidney Take Out the Toxins? When the dirty blood enters the kidney it passes through units called nephrons. As the blood passes through each glomerulus filter, water and waste is taken out.
  • 13. How Does the Kidney Take Out the Toxins? When the dirty blood enters the kidney it passes through units called nephrons. As the blood passes through each glomerulus filter, water and waste is taken out. What is your urine made from??
  • 14. How Does the Kidney Take Out the Toxins? When the dirty blood enters the kidney it passes through units called nephrons. As the blood passes through each glomerulus filter, water and waste is taken out. What is your urine made from?? Waste from Blood!
  • 15. Picture Showing Blood Vessels Taking Blood In and Out of the Kidney
  • 16. Picture Showing Glomerulus Filters in a Nephron
  • 17. How the Kidney Gets Waste Out…….
  • 18. Ureters The urine (waste) collects, goes down the ureters and into the bladder.
  • 19. Ureters Ureter function: to bring the waste from blood (=urine) to the bladder.
  • 20. Bladder The bladder stores the urine.
  • 21. Bladder The bladder stores the urine. Empty Bladder Full Bladder
  • 22. Urethra Carries blood from the bladder. In males, the urethra ends at the tip of the penis. In females, the urethra ends near the opening of the vagina. Kidney
  • 23. Urethra Go back and put a female urethra on your drawing. Kidney
  • 24. Lungs Lungs absorb oxygen for respiration. Carbon dioxide is a byproduct of respiration. The lungs expel carbon dioxide. This is why lungs are part of the excretory system.
  • 25. Lungs -Oxygen comes into the trachea, and then into the lungs through bronchus and bronchioles.
  • 26. Lungs -Oxygen comes into the trachea, and then into the lungs through bronchus and bronchioles. -Oxygen then moves to alveoli. Blood vessels around the alveoli then transport the O2 for respiration.
  • 27. Alveoli in the Lungs -The carbon dioxide made during respiration then returns back to alveoli where it is absorbed and exhaled.
  • 28. Review Alveoli With Picture
  • 29. Draw a ball of alveoli with its blood vessels. Show arrows () with blood coming IN and OUT. Show which blood has O2 (veins), and which blood has CO2 (arteries).
  • 30. Breathing -Inhale oxygen -Exhale CO2 made during respiration What is respiration?
  • 31. Breathing -Inhale oxygen -Exhale CO2 made during respiration What is respiration? It is the release of energy from nutrients and O2 in the cells.
  • 32. Skin Skin is the largest organ in the body. Why is the skin part of the excretory system?
  • 33. Skin Skin is the largest organ in the body. Why is the skin part of the excretory system? Sweat. Water, urea and salt are excreted in sweat.
  • 34. Skin Skin is the largest organ in the body. Why is the skin part of the excretory system? Sweat. Water, urea and salt are excreted in sweat. Epidermis – outer layer of skin protects the body from bacteria. (the outer layer of your epidermis is dead skin, this is where most of the dust in your house comes from).
  • 35. Skin Skin is the largest organ in the body. Why is the skin part of the excretory system? Sweat. Water, urea and salt are excreted in sweat. Epidermis – outer layer of skin protects the body from bacteria. (the outer layer of your epidermis is dead skin, this is where most of the dust in your house comes from). Dermis – this layer is alive and contains blood vessels and sweat glands.
  • 36. Liver?.... Liver turns ammonia into urea. Also helps remove poisonous substances like mercury from body. Liver is considered a digestive system organ, but plays an important role in excretion as well.
  • 37. Questions (can use phone) 1) How do the kidneys filter blood? 2) What job do the lungs perform in eliminating waste from the body? 3) What is in sweat? 4) Name 3 ways that wastes are taken out of the body. 5) Books like to color arteries _________, and veins _________. Which color carries oxygen? 6) Oxygen travels into bronchioles, then into __________ where it is absorbed into the bloodstream. 7) Carbon dioxide is brought to the lungs by ____________ where it is then absorbed by alveoli and exhaled by the lungs. 8) Name one difference between an artery and a vein. 9) What is the main artery that supplies the kidneys with “dirty” blood called? 10) A car has an oil filter to clean its oil : A nephron has a __________ to clean its blood. 11) Your _________converts ammonia into urea. The urea is then moved down by the aorta to your ___________ where it is taken out of the bloodstream by _________. 12) Name 2 places that urea can be excreted from the body. 13) What is the job of alveoli? 14) Explain the difference between a nephron and a glomerulus. 15) What part of the body does respiration take place?