Unit 4 Vocab

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Across
  1. 4. the smallest unit that can perform all life processes; cells are covered by a membrane and contain DNA and cytoplasm.
  2. 5. two large chambers toward the bottom of the heart that collect and expel blood received from the atrium to the arteries to be taken to the lungs and body.
  3. 7. + Cell = Tissue
  4. 9. Organisms
  5. 13. the area of the throat that contains the vocal cords and produces vocal sounds.
  6. 14. a tiny blood vessel that allows an exchange between blood and cells in tissue.
  7. 15. the passage from the mouth to the larynx and esophagus.
  8. 16. thin skeletal muscle that sits at the base of the chest and separates the abdomen from the chest. It contracts and flattens when you inhale and creates a vacuum effect that pulls air into the lungs. When you exhale, it relaxes and the air is pushed out of the lungs.
  9. 19. a collection of tissues that carry out a specialized function of the body.
  10. 22. involuntary constriction and relaxation of the muscles of the intestines or another canal, creating wave-like movements that push the contents forward.
  11. 24. the upper chambers of the heart through which blood enters the ventricles.
  12. 25. System- a group of organs that work together to perform body functions.
  13. 27. System (Urinary) the system of an organism's body that performs the function of excretion, the bodily process of removing waste. Organs that make, store, and eliminate urine.
  14. 29. System a collection of organs that transport blood throughout the body. Also known as the cardiovascular system.
  15. 31. Digestion- physical process that does not change the chemical nature of food but makes it smaller. Ex: Chewing
  16. 33. tube that allows urine to pass out of the body.
Down
  1. 1. duct by which urine passes from the kidney to the bladder.
  2. 2. one of the pair of organs that filter water and wastes from the blood and that excrete products as urine.
  3. 3. any of the tiny air sacs of the lungs where oxygen and carbon dioxide are exchanged.
  4. 6. + Cell = Tissue
  5. 7. Digestion- the secretions of enzymes throughout your digestive tract that help break the chemical bonds that hold food together so it can be broken down into digestible parts.
  6. 8. + Organ = Organ System
  7. 10. fingerlike or threadlike projections that increase surface area and facilitate the passage of fluid or nutrients.
  8. 11. a living thing; anything that can carry out life processes independently.
  9. 12. two tubes that connect the lungs with the trachea (bronchus)
  10. 17. System- the organs that break down food so that it can be used by the body.
  11. 18. blood vessel that carries blood away from the heart to the body’s organs.
  12. 20. a vessel that carries blood to the heart.
  13. 21. a group of similar cells that perform a common function.
  14. 23. hollow organ in your lower abdomen that stores urine.
  15. 26. the tube that connects the larynx to the lungs.
  16. 28. the maintenance of a constant internal state in a changing environment.
  17. 30. + Tissue = Organ
  18. 32. System + Organ System = Organism
  19. 34. System- a collection of organs whose primary function is to take in oxygen and expel carbon dioxide; the organs of this system include the lungs, the throat, and the passageways that lead to the lungs.