Across
- 3. The natural outer layer of tissue that covers the body of a person or an animal.
- 7. The quality or state of being immune
- 8. Secretion that is usually rich in mucins and is produced by mucous membranes
- 9. The watery fluid in the mouth made by the glands.
- 10. The smallest, basic unit of life.
Down
- 1. Salty liquid that flows from the eye
- 2. Proteins that protect you when an unwanted substance enters your body.
- 4. A thin soft flexible sheet or layer especially of a plant or animal part (as a cell, tissue, or organ) membranous.
- 5. Refers to anything that causes disease.
- 6. An organ that is part of the digestive system.