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Humans as a System


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Mr. Zajiczek's presentation on humans as a system.

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Humans as a System

  1. 1. The Human System<br />A quick look at homo sapiens as a system.<br />
  2. 2. Series of Subsystems<br />Humans are a complex set of sub-systems<br />Each system is interconnected<br />The continued function of each system is required for humans to stay alive<br />The first system is the circulatory system<br />
  3. 3. Circulatory System<br /><ul><li>Transports blood
  4. 4. Oxygenates blood via the lungs
  5. 5. Cleans blood through the kidneys
  6. 6. Delivers oxygen to the brain
  7. 7. Transports nutrients from digestion
  8. 8. Delivers nutrients to muscles</li></li></ul><li>Circulatory System Structure<br />The circulatory system consists of a closed loop<br />Contains ~5 – 6 litres of blood<br />Works closely with the digestive system<br />If all vessels were laid end to end it would be over 100 000 km long!<br /> (that is two and a half times around the earth)<br />
  9. 9. Muscular System<br />Moves the body –<br />Pumps the circulatory system –<br />Protects vital organs –<br />Allows humans to capture food –<br />Allows humans to flee from danger –<br />Allows humans to relocate – <br />
  10. 10. Muscular System Structure<br />Three types: skeletal muscles, cardiac or heart muscles, and smooth (non-striated) muscles<br />Skeletal muscles, like your bicep or quadricep, help us move<br />Heart muscles pump blood through or circulatory system<br />Smooth muscles move automatically, like your iris dilation muscles or your bowels<br />
  11. 11. Nervous System<br /><ul><li>Regulates all bodily functions
  12. 12. Controls muscular/circulatory systems
  13. 13. Initiates fight or flight response
  14. 14. Creates thought
  15. 15. Receives and interprets stimuli
  16. 16. Communicates via electricity</li></li></ul><li>Nervous System Structure<br />The nervous system consist of millions of tiny wire-like objects called neurons<br />Imagine them as wires that connect things like your brain to your fingers<br />Your brain sends and receives signals to and from other parts of your body<br />Regulates things like temperature, hunger etc.<br />
  17. 17. Skeletal System<br />Supports all other systems –<br />Protects organs and vital systems –<br />Houses spinal cord –<br />Facilities eating (Jaw/Teeth) –<br />Attaches to muscular system –<br />Allows for locomotion – <br />
  18. 18. Skeletal System Structure<br />Think of your skeleton as the frame of a house or a building<br />All the girders, beams and wood frames are like your skeleton<br />Helps support our bodies and protect our organs (like our heart)<br />Imagine someone without a skeleton (YUCK!)<br />
  19. 19. Digestive System<br /><ul><li>Converts food to energy
  20. 20. Introduces nutrients into blood
  21. 21. Filters toxins out of food
  22. 22. Provides energy to other systems</li></li></ul><li>Digestive System Structure<br />The digestive system is like a processing plant<br />Food goes in the mouth and is chewed up by our teeth<br />We swallow the food where it goes into our stomach<br />Our stomach breaks it down further<br />Our intestine processes the food for nutrients<br />We expel the waste<br />
  23. 23. Interconnected<br />Each of those systems is interconnect<br />Without one, the others would not function<br />Without any of them, we would die<br />Very complex systems with more subsystems<br />Too many to list<br />
  24. 24. References<br /><br /><br />