Answer Happy

Across 3. These animals work to maintain body different than environment. 4. There are these many main regions within the alimentary canal. 7. This type of fluid is found "inside" cells (2 words with space). 11. These are composed of two or more kinds of tissues arranged in various proportions and patterns. 13. This accelerates or amplifies a process (2 words with space). 14. This secretes digestive enzymes and fluid rich in bicarbonate ions (HCO3-). 15. This is the gastrointestinal (GI) tract (2 words with space). 17. Plasma membranes tend to be highly permeable to water due to water channels called: 18. This disrupts large lipid droplets into tiny droplets, increasing surface area, and providing greater exposure to lipase. 19. The nervous systems is a complex networks of: 20. Cells with similar properties group to form: Down 1. Surface area of each villus is covered with a layer of epithelial cells that have: Birds have this glandular portion that secretes acid and pepsinogen. Partially digested and acidified food moves into the gizzard. These animals are herbivores which use microorganisms in their digestive tract to breakdown cellulose. N 2. 5. 6. A change in the variable being regulated brings about responses that move the variable in the opposite direction is known as this: (2 words with space). Process of maintaining a relatively stable internal environment despite changes in external surroundings. 9. The centre of each absorption villus has capillaries and a lymphatic vessel called a: 10. This enzyme initiates digestion of carbohydrates (2 words with space). 12. This is a protease that begins protein digestion. 16. These are chemical messengers produced by the endocrine system and secreted into the blood. 8.
17 20 16 19 10 11