Cell Specializations

2. Tissue with cell walls evenly thickened by lignin
5. Receives and transmits impulses from other nerve endings to the cell body
7. Transports water and mineral salts from roots to leaves
8. Combinations of tissues that work together
9. Small openings in the leaf epidermis that facilitate gas exchange in plants
13. Transmits impulses from the cell body to other nerves
15. Cells are long and cylindrical, have many nuclei at the edges, work voluntarily, contract strongly and quickly, and attach to the skeleton
16. Cells have a single nucleus in the center, work involuntarily, contract slowly, and are found in the walls of internal organs
18. Thin-walled tissues that constantly divide, functioning in growth
20. Consists of cells that line the surfaces of the body or internal cavities of animals
21. Cells are long, cylindrical, and branched, have many nuclei in the center, work involuntarily, and contract quickly and rhythmically
23. Binds oxygen in blood cells, allowing oxygen to be transported throughout the body
24. The smallest unit that makes up living organisms

1. Receives and transmits impulses from dendrites to axons
3. Organisms that consist of only one cell
4. Groups of organs that work together
6. Leaf tissue that not only participates in photosynthesis but also temporarily stores its products
10. An active movement organ that can move the skeleton
11. Leaf tissue with abundant chlorophyll, where photosynthesis takes place
12. Groups of similar cells that work together
14. Transports nutrients (photosynthesis products) from leaves to the rest of the plant
17. Cells are biconcave, lack a nucleus, and have a lifespan of about 120 days
19. Organisms that are composed of many cells
22. Tissue with cell walls thickened by cellulose at certain parts