Worksheet I. Tissues

1. The science that studies the structure of living organisms is called ______________________.
2. The science that studies the function of a particular structure in living organisms is called _____________________.
3. List 8 levels of structural organization from the smallest to the largest.
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4. Name the 4 most general kinds of tissues.
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5. Name 10 organ systems.
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6. A group of closely associated cells that are similar in structure and perform a common function is called a(n): ________________________.
7. The study of tissues is called ________________________.
8. List 6 characteristics of epithelial tissues.
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9. A nonliving, acellular, adhesive material, composed of glycoproteins and secreted by epithelial cells is called the _________________________.
10. An acellular network of collagen and reticular fibers secreted connective tissue is called the:
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11. The basement membrane is composed of the _________________ and __________________.
12. Epithelial tissues are classified by their ___________________ and _____________________.
13.  Name 3 shapes of epithelial cells found next to the outside or lumen.
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14. Identify the specific kind of epithelial tissue indicated by the following statements:
     a. A single cell layer thick; cells look like a tile floor from above. ________________________
     b. A large oval nucleus, single layered.   _____________________________
     c. Found in glands (such as thyroid) and kidney tubules. _____________________________
     d. Single layered; cells with round central nucleus.  _____________________________
     e. Flattened laterally with reduced cytoplasm; simple. _____________________________
     f. A rare type of epithelium; usually 2 layers; in testes. _____________________________
     g. Found in the bladder and urethra.   _____________________________
     h.  Endothelium.      _____________________________
     i. Main epithelium of the respiratory tract.   _____________________________
     j. Main epithelium of the digestive tract.   _____________________________
     k. Single-layered; cells look like a string of beads.  ____________________________
     l. Found in alveoli of the lungs.    _____________________________
     m. Cells rounded when organ is empty; squamous-like when filled. _______________________
     n. Tissue appears multilayered; all cells touch basement membrane. ______________________
     o.  Found in areas subject to wear and tear.  _____________________________
     p.  Rare; found in conjunctiva of the eye.   _____________________________
     q.  Covers tongue, mouth, epidermis of skin, vagina. _____________________________
     r. Cell structure resembles a fried egg.   _____________________________
     s. Multilayered and keratinized.    _____________________________
     t. Brush border cells.      _____________________________

15. Name 3 modifications of simple columnar or pseudostratified epithelia.
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16. Which tissue is the most abundant and widely distributed tissue in the body?              _____________________________
17. Give 5 functions for connective tissues.
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18. Give 2 characteristics of connective tissues.
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19.  Connective tissues are composed of 3 components; name them.
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20. The matrix is made up of the ________________________ and _____________________.

21.  The unstructured material that fills space between cells and contains fibers is referred to as:
____________________________.
22.  Negatively charged polysaccharides (with an attached sulfate group) that coil and trap water  are called: _______________________________.
23. Give 2 specific examples of GAGs.
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24. Name the 3 types of fibers found in connective tissues.
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25. Identify the fiber based on the description given below.
     a. Stretches and returns to original length.   _____________________________
     b. Extremely tough; resists longitudinal stress.  _____________________________
     c. Also called white fibers.     _____________________________
     d. Most common type of fiber.    _____________________________
     e. These fibers branch extensively.   _____________________________
     f. Also called yellow fibers.    _____________________________
     g. These fibers stretch and lock; large diameter.  _____________________________
     h.  Common in soft tissues of organs.   _____________________________
     i. Thought to be fine collagen fibers with slightly different chemical make-up.      _____________________________

26. A  mitotically active cell that secretes fibers and ground substance is identified by the suffix ________.
27. The cell type found in connective tissue proper is a(n):  ______________________________.
28.  The cell type found in cartilage is a(n):   ______________________________.
29.  The cell type that secretes bone is a(n):   ______________________________.
30. The cell type that forms blood cells is a(n):   ______________________________.
31. Identify the kind of connective tissue based on the description or location given below.
     a. An areolar tissue with large numbers of adipocytes. ______________________________
     b. A loose connective tissue with a chicken wire look. ______________________________
     c. A dense connective tissue with parallel collagen fibers. ____________________________
     d. Semifluid ground substance of mostly hyaluronic acid; loosely dispersed fibers and cells.    ______________________________
     e. Main tissue of the dermis.    ______________________________
     f. Found in ligaments and tendons.   ______________________________
     g. Storehouse of nutrients and E; shock absorber and insulator. ________________________
     h. Interwoven reticular fibers with reticular cells.  ______________________________
     i. Forms stroma-supporting tissue of lymph nodes, liver, spleen, and bone marrow.    ______________________________
     j.  Collagen fibers are interwoven and therefore irregular. _____________________________
     k. Mostly elastin fibers present.    ______________________________
     l. Ligaments connecting adjacent vertebrae and vocal cords. __________________________

32. List 4 kinds of connective tissues.
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33.  What is Marfan's syndrome? ___________________________________________________
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34. What advantages are given by dense regular and dense irregular connective tissues? _________
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35. What is liposuction? __________________________________________________________
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36. What is a biopsy? ____________________________________________________________
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37. You are given 2 unlabeled slides of the lining of the digestive tract.  Slide one has simple columnar epithelium with many goblet cells present.  Slide two has stratified, weakly keratinized, epithelium.  What parts of the digestive system are likely candidates for these two slides and why?
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38. How do elastic and collagen fibers differ? __________________________________________
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39. Distinguish between matrix and ground substance. ___________________________________
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40.  What does the term 'cellularity' mean with regard to tissues? ______________________________
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41.  Why are respiratory surfaces lined with ciliated and goblet epithelia? _____________________
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42. Why is pseudostratified epithelium classified as simple? _______________________________
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43. Are all the cells of stratified columnar or stratified cuboidal epithelia columnar or cuboidal in shape? Explain.  ________________________________________________________________
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44. Give at least one function for the organelles listed below.
     a. endoplasmic reticulum _____________________________________________________
     b. golgi body ______________________________________________________________
     c. lysosome _______________________________________________________________
     d. ribosome _______________________________________________________________
     e. nucleolus _______________________________________________________________
     f. mitochondrion ___________________________________________________________
     g. vesicle ________________________________________________________________

45. Why are stratified epithelial tissues usually shed in sheets rather than individual cells? _________
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