c. For a molecule to be absorbed, which tissue route will take longer? Explain why. Stratified tissue will take longer to absorb a molecule because the molecule will need to travel through multiple rows of cells. 11. The structure of the epithelial tissue is directly related to its covering function. Use Model #2 to determine if the listed epithelial functions below are due to simple or stratified tissue. Write your answers below and on the provided separate sheet of paper. a. Protection: Epithelia protect exposed surfaces from abrasion, dehydration, and other damage caused by biological and chemical agents = stratified b. Diffusion: exchange of chemicals by passive transport = simple c. Absorption: movement of chemicals from lumen into a blood vesicle = simple Lumen/Air Absorption Secretion Secretion Absorption
d. Secretion: cells produce a specific chemical that is released into the lumen = simple e. Filtration: exchange allows small molecules to pass through epithelial, but prevents passage of large molecules (i.e. coffee filter) = simple f. Stretching = tissue distends/widens to accommodate increased fluid volume = stratified g. Propulsion = cilia move chemicals/fluids across epithelial tissue surface, moving the chemicals to another location = simple 12. Have the presenter switch to another POGIL group to exchange responses. Once done, go back to your original POGIL group. As a group, evaluate the different responses to epithelial functions, and finalize your answers above. 13. Complete the specific epithelial tissue function and locations table below. Each bullet requires an answer. a. Functions : Use your knowledge of epithelial structure and responses to question #11 to determine the function of each individual epithelial tissue. b. Locations : Each organ system is lined with different epithelial tissue. The epithelial lining used is dependent on the org an’s function. Place the following organs into the below table.
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- Fall '16
- Epithelial tissue