Human Body Systems

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Across
  1. 1. removes excess, unnecessary materials from the body fluids of an organism, so as to help maintain internal chemical homeostasis and prevent damage to the body
  2. 4. The Basic unit of life
  3. 6. an organ of soft nervous tissue contained in the skull of vertebrates, functioning as the coordinating center of sensation and intellectual and nervous activity
  4. 7. either of the two large organs of respiration located in the chest cavity and responsible for adding oxygen to and removing carbon dioxide from the blood.
  5. 8. breaks down food into simple nutrients such as carbohydrates, fats and proteins. These can then be absorbed into your blood, so your body can use them for energy, growth and repair.
  6. 10. a network of organs, vessels and tissues that move a colorless fluid called lymph back to your bloodstream.
  7. 12. a hollow muscular organ that pumps the blood through the circulatory system by rhythmic contraction and dilation
  8. 14. a membranous sac in humans and other animals, in which urine is collected for excretion
  9. 16. gives the body its shape, allows movement, makes blood cells, provides protection for organs and stores minerals
  10. 19. the system that helps in gas exchange, breathing, sound production,and olfactory assistance
  11. 21. the network of nerve cells and fibers which transmits nerve impulses between parts of the body.
Down
  1. 2. made up of all the body's different hormones, regulates all biological processes in the body from conception through adulthood and into old age
  2. 3. the system that circulates blood and lymph through the body, consisting of the heart, blood vessels, blood, lymph, and the lymphatic vessels and glands.
  3. 5. the organ system responsible for the production and fertilization of gametes and, in females, the carrying of a fetus
  4. 9. the system that protect bones, organs, and other internal structures from harm.
  5. 11. a part of an organism that is typically self-contained and has a specific vital function, such as the heart or liver in humans.
  6. 13. permits movement of the body, maintains posture, and circulates blood throughout the body
  7. 15. a complex network of organs, cells and proteins that defends the body against infection, whilst protecting the body's own cells.
  8. 17. a group of cells that have similar structure and that function together as a unit
  9. 18. a large lobed glandular organ in the abdomen of vertebrates, involved in many metabolic processes
  10. 20. the internal organ in which the major part of the digestion of food occurs, being a pear-shaped enlargement of the alimentary canal linking the esophagus to the small intestine.