Match the function listed in column A with the surface modifications and special

Question

Match the function listed in column A with the surface modifications and specialized cells found in epithelial tissues listed in column B. Column A _____ 1. provide lubrication _____ 2. increase surface area for enhanced absorption _____ 3. aid in movement of substances in one direction _____ 4. imparts strength and protection Column B a. cilia b. goblet cells c. keratinization d. microvilli When observing a cross section of a tube that is lined with epithelial tissue (e.g., the gut tube), the epithelial surface that faces the lumen of the tube the _____ (apical/basal) surface. Embryonic connective tissue is called _____ The extracellular matrix of connective tissue is composed of cells and fibers. _____ (True/False) For each category of connective tissue listed in the following table, write in the major cell types, the fiber types, and the characteristics of the substance of the tissue. Refer to the textbook for assistance.

Explanation / Answer

3. 1 Provide lubrication is goblet cells which scattered among the epithelial lining of organs like the intestinal and respiratory tract.

2. Increase the surface area is microvilli which are present in the large intestine for the absorption of nutrients.

3. Aid in the movement of substances in one direction is cilia.

4. Keratinization Imparts strength and protection. It is the process in which the cytoplasm of the outermost cells of the mammalian epidermis is replaced by keratin.

Exercise 5.2. The embryonic connective tissue is called mesenchyme.

6. True.

7. a. In Connective tissue Proper

Cells are fibroblasts, mast cells, plasma cells, macrophages,adipocytes, and leukocytes.

Fibres Protein fibres like fibroblasts or fibrocytes.

Ground tissues extracellular matrix.

b. Cartilage

Cells - chondrocytes

Fibres - elastin fibres

Ground tissues - proteoglycans.

c. Bones

Cells - Oesteocytes

Fibres - Collagen fibres

Ground substances - proteoglycans

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