1: HUMAN ANATOMY

1. The smallest living units of structure & function.
2. Epithelial cells that contain proteins called keratin.
4. Secretory vesicle formed by Golgi apparatus containing enzymes that digest foreign material.
5. Cube-shaped epithelial cell.
6. Indicate several layers of relaxed and stretched epithelial cells.
8. Scale-like epithelial cell.
11. All the systems of the body functioning with one another to constitute the whole organism.
12. Directs all the metabolic activities of the cell.
14. An extensive series of interconnecting membranous canals in the cytoplasm.
17. Indicate several layers of epithelial cells.
18. Tiny granules of RNA and protein found on the outer surface of rough endoplasmic reticulum or in a free form.

1. The protective sheath enveloping the cell body.
3. Stacks of closely folded flattened membranous sacs that packaged the proteins from rough endoplasmic reticulum into secretory granules.
7. A group of cells with similar structure and function.
8. Different organs grouped together to perform a specific function.
9. Column-shaped epithelial cell.
10. A complex network of tiny protein fibers inside the cytoplasm that maintains the cell structure and allows it to change shape and move.
13. A group of two or more different type of tissues grouped together to perform a same function.
15. Epithelial cells that contains cilia.
16. Sausage-shaped structure that act as the powerhouse of the cell by releasing energy.