Unit 8 - Human Body Systems

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Across
  1. 1. Blood vessel that carries blood from the body back to the heart
  2. 2. Cell fragment released by none marrow that helps in blood clotting
  3. 4. Structure in the throat that contains the vocal cords
  4. 6. Large flat muscle at the bottom of the chest cavity that helps with breathing
  5. 8. Lower chamber of the heart that pumps blood out of heart to the rest of the body
  6. 9. Smallest blood vessel; brings nutrients and oxygen to the tissues and absorbs carbon dioxide and waster products
  7. 11. Large blood vessel that carries blood away from the heart to the tissues of the blood
  8. 12. One of two large tubes in the chest cavity that leads from the trachea to the lungs
  9. 13. Straw-colored liquid portion of the blood
Down
  1. 1. Flap of connective tissue located between an atrium and a ventricle, or in a vein, that prevents blackflow of blood
  2. 2. Small group of cardiac muscle fibers that maintains the heart's pumping rhythm by setting the rate at which the heart contracts; the sinoatrail (SA) node
  3. 3. Tube that connects the larynx to the bronchi; also called the windpipe
  4. 5. Fluid that is filtered out of the blood
  5. 7. Iron-containing protein in red blood cells that binds oxygen and transports it to the body
  6. 10. Upper chamber of the heart that receives blood from the rest of the body