Across
- 4. the smallest unit that can perform all life processes; cells are covered by a membrane and contain DNA and cytoplasm.
- 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.
- 7. + Cell = Tissue
- 9. Organisms
- 13. the area of the throat that contains the vocal cords and produces vocal sounds.
- 14. a tiny blood vessel that allows an exchange between blood and cells in tissue.
- 15. the passage from the mouth to the larynx and esophagus.
- 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.
- 19. a collection of tissues that carry out a specialized function of the body.
- 22. involuntary constriction and relaxation of the muscles of the intestines or another canal, creating wave-like movements that push the contents forward.
- 24. the upper chambers of the heart through which blood enters the ventricles.
- 25. System- a group of organs that work together to perform body functions.
- 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.
- 29. System a collection of organs that transport blood throughout the body. Also known as the cardiovascular system.
- 31. Digestion- physical process that does not change the chemical nature of food but makes it smaller. Ex: Chewing
- 33. tube that allows urine to pass out of the body.
Down
- 1. duct by which urine passes from the kidney to the bladder.
- 2. one of the pair of organs that filter water and wastes from the blood and that excrete products as urine.
- 3. any of the tiny air sacs of the lungs where oxygen and carbon dioxide are exchanged.
- 6. + Cell = Tissue
- 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.
- 8. + Organ = Organ System
- 10. fingerlike or threadlike projections that increase surface area and facilitate the passage of fluid or nutrients.
- 11. a living thing; anything that can carry out life processes independently.
- 12. two tubes that connect the lungs with the trachea (bronchus)
- 17. System- the organs that break down food so that it can be used by the body.
- 18. blood vessel that carries blood away from the heart to the body’s organs.
- 20. a vessel that carries blood to the heart.
- 21. a group of similar cells that perform a common function.
- 23. hollow organ in your lower abdomen that stores urine.
- 26. the tube that connects the larynx to the lungs.
- 28. the maintenance of a constant internal state in a changing environment.
- 30. + Tissue = Organ
- 32. System + Organ System = Organism
- 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.