U2PT part 1

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Across
  1. 3. made up of blood vessels that carry blood away from and towards the heart.
  2. 6. the organs and processes of the body that resist infection and toxins. Organs include the thymus, bone marrow, and lymph nodes.
  3. 7. passive biological system that removes excess
  4. 10. network of delicate tubes throughout the body.
  5. 11. your body's outer layer.
  6. 12. messenger system comprising feedback loops of the hormones released by internal glands of an organism directly into the circulatory system, regulating distant target organs. In vertebrates, the hypothalamus is the neural control center for all endocrine systems.
Down
  1. 1. Allows for movement by contracting
  2. 2. brain, spinal cord, and a complex network of nerves.
  3. 4. your body's central framework.
  4. 5. consists of the gastrointestinal tract plus the accessory organs of digestion.
  5. 8. the network of organs and tissues that help you breathe.
  6. 9. also known as the urinary tract or renal system, consists of the kidneys, ureters, bladder, and the urethra. The purpose of the urinary system is to eliminate waste from the body, regulate blood volume and blood pressure, control levels of electrolytes and metabolites, and regulate blood pH.