Background Lesson 1: The Body Systems Pt. 1

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Across
  1. 4. involuntary muscle found in the heart
  2. 5. a hollow and muscular organ located in the center of the chest that pumps blood blood vessels around the body
  3. 7. release substances into the body
  4. 11. an organized group of similar cells
  5. 13. layer of skin that lies below the epidermis and firmly anchors skin to the body.
  6. 14. tissues that connect muscles to bones
  7. 16. responsible for blood clotting which stops blood from flowing outside the wall of an injured blood vessel
  8. 19. cover and protects the entire body
  9. 20. lies under the dermis and contains fat which insulates the body, blood vessels and stores energy.
  10. 23. the smallest blood vessels
  11. 26. made of minerals, proteins and living cells
  12. 27. made of different tissues.
  13. 28. muscles that are involuntary and cannot be controlled
  14. 29. the basic unit of all living things, including humans.
  15. 30. contains muscles that help parts of the body move
Down
  1. 1. muscles that attach to bone
  2. 2. help defend the body against infections and live in the lymphatic organs of the body
  3. 3. provides the body with a continuous supply of blood containing oxygen and nutrients
  4. 6. the outermost layer of the skin
  5. 8. a location where two or more bones meet and are held together
  6. 9. carry blood form the rest of the body to the heart
  7. 10. carry blood from the heart to the rest of the body
  8. 12. where nails grow from
  9. 15. oil glands that produce oil and keeps skin moist and prevents hair from becoming brittle.
  10. 17. most numerous blood cells that contain hemoglobin and have certain sugars on their surface that determine a person's blood type
  11. 18. group of organs that works together
  12. 21. skin pigment
  13. 22. made of 206 bones, protects the body structure and enables movement
  14. 24. strong bands of tissue that hold bones together
  15. 25. where hair grows from