Introduction to Human Body Systems


Published on

Published in: Education
  • Be the first to comment

No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide

Introduction to Human Body Systems

  1. 1. Introduction to Body Systems
  2. 2. Your body is made up of an amazing collection of organs and organ systems all working together to maintain a stable environment.
  3. 3. Homeostasis is the ability of an organism to maintain a stable internal environment while living in a changing external environment. The man is shivering, full of goose bumps, and his metabolism is going up which creates warmth when the temperature is cold outside.
  4. 4. Your body is continually working to maintain homeostasis. Look at the pictures on the next 4 slides. Explain how the body is demonstrating homeostasis in each picture. Homeostasis means balance…a good balance of work and play is healthy
  5. 5. Picture #1
  6. 6. When your body becomes too warm, the skin sweats to cool it off. When you perspire (sweat) heavily, you release water from your body. An internal response is you feel thirsty.
  7. 7. Picture #2
  8. 8. When pollen or other particles of dust enter your respiratory system, your body responds by sneezing to clear it out.
  9. 9. Picture #3
  10. 10. When you eat a piece of food that is contaminated with bacteria, an internal response of your body is to vomit.
  11. 11. Picture #4
  12. 12. When you get an infection, your body’s internal response is to increase your body temperature.
  13. 13. When we eat too much, your body responds by falling asleep.
  14. 14. Living Things Have Cells Cells Tissue Organ Organ System Organism
  15. 15. Cells  Basic living unit of all organisms  Multi-cellular organisms are made up of many different type of cells that make more cells to grow.  Specialized cells enables multi- cellular organisms to do many functions.
  16. 16. Tissue  A tissue is a group of cells that work together to perform a specific job.  Animals have four types of cells: nerve, muscle, connective, and protective tissue.  Plants have transport, protective, and ground tissue.
  17. 17. Organs An organ is a group of tissues that work together to perform a specific job. Plants also have different kinds of tissues that work together.
  18. 18. Organ System  Organs work together in groups to perform particular jobs . These groups are called organ systems. Each system has a specific job to do in the body.  Plants have leaf, root and stem systems.
  19. 19. Cells Tissue Organ Organ System Organism Which leads to…
  20. 20. Quiz Time Stimulus • Ate turkey at your aunt’s house and started feeling bad. Response • In the bathroom throwing up! • Worms show up, crawling around on the sidewalk. • It has been raining. • The days become cooler and the nights get colder. • Leaves turn autumn colors of red, orange, yellow, and brown. • Bunnies typically run into the bushes. • Sense humans, cars, bikes, really anything coming.
  21. 21. TAKS Question 1 • The process of walking requires a complicated and specific coordination of movements. At what level does the movement that allows you to walk occur? • Cellular • Tissue • Organ • System • Movement occurs at the level of the individual muscles and bones
  22. 22. TAKS Question 2 • Living things come in many shapes and sizes. A person’s size is several thousand times the size of an ant. Some living things are larger than others because some… • Cells are larger than others • Organisms have cells more tightly packed than others • Cells can stretch more than others • Organisms have more cells than others. • The size of an organism is directly related to the number of cells within the organism
  23. 23. TAKS Question 3 • One way of organizing how we understand the world is by looking at different levels of organization. What level within an organism is smaller than an organ system? • Ecosystem • Biome • Organ • Organism • Biosphere • Biome • Ecosystem • Community • Population • Organism • Organ System • Organ • Tissues • Cells • Organelles • Macromolecule s • Molecules • Atoms
  24. 24. TAKS Question 4 • Rufus is scratching behind his ears and other parts of his body while going on a walk. His owner checks him over and finds fleas. What is the stimulus? What is the response? • The fleas are the stimulus and the response is the scratching