Circulatory System

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Across
  1. 3. Walls collect and expel blood received from an atrium towards peripheral beds within the body and lungs
  2. 4. Circuit circulation of blood in the blood vessels of the myocardium
  3. 8. hollow muscular organ that pumps blood through the circulatory system
  4. 10. each of the two upper cavities of the heart in which blood is passed to ventricles
  5. 11. System get food and oxygen to all the cells in the body
  6. 13. Circuit carries blood away from the heart to the rest of the organs and tissues
  7. 14. a regulatory substance to stimulate specific tissues and cells into action
  8. 16. the phase of the heartbeat when the heart contracts and pumps blood from the chambers into the arteries
Down
  1. 1. Veins a vein carrying oxygenated blood from the lungs to the left atrium of the heart
  2. 2. Wastes substances left over that can not be used again and must be excreted
  3. 4. Muscle muscle tissue of the heart
  4. 5. Cava a large vein carrying deoxygenated blood into the heart
  5. 6. substance that provides essential nourishment for growth
  6. 7. fine branching blood vessels that form a network between the arterioles and venules
  7. 9. Vessels tubular structure carrying blood through the tissues and organs
  8. 12. the phase of the heartbeat when the heart muscle relaxes and allows the chamber to fill with blood
  9. 15. life supporting component of the air