Human Body Systems
Across
- 3. pertaining to the act of breathing
- 4. animal tissue consisting predominantly of contractile cells
- 5. a group of independent elements comprising a unified whole
- 7. of or relating to a system of sensory apparatus
- 10. a substance that aids the process of breaking down food
- 11. of or pertaining to glands that secretes hormones
- 12. a structure in an animal specialized for some function
- 13. either of two saclike respiratory organs in the chest of vertebrates; serves to remove carbon dioxide and provide oxygen to the blood
- 14. of or relating to circulation
Down
- 1. of or relating to the process of excretion
- 2. rigid tissue that makes up the skeleton of vertebrates
- 5. a natural protective body covering and site of the sense of touch
- 6. relating to a structure made of bones and cartilage
- 8. the hollow muscular organ located behind the sternum
- 9. of or relating to the outer protective coating of organisms