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BIO 140 Human Biology I - Questions and Solutions

Epithelial Tissue - Solutions

Review Questions

1. In observing epithelial cells under a microscope, the cells are arranged in a single layer and look tall and narrow, and the nucleus is located close to the basal side of the cell. The specimen is what type of epithelial tissue?

  1. columnar
  2. stratified
  3. squamous
  4. transitional

2. Which of the following is the epithelial tissue that lines the interior of blood vessels?

  1. columnar
  2. pseudostratified
  3. simple squamous
  4. transitional

3. Which type of epithelial tissue specializes in moving particles across its surface and is found in airways and lining of the oviduct?

  1. transitional
  2. stratified columnar
  3. pseudostratified ciliated columnar
  4. stratified squamous

4. The ________ exocrine gland stores its secretion until the glandular cell ruptures, whereas the ________ gland releases its apical region and reforms.

  1. holocrine; apocrine
  2. eccrine; endocrine
  3. apocrine; holocrine
  4. eccrine; apocrine

 

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Critical Thinking Question

1. The structure of a tissue usually is optimized for its function. Describe how the structure of individual cells and tissue arrangement of the intestine lining matches its main function, to absorb nutrients.

Solution: Columnar epithelia, which form the lining of the digestive tract, can be either simple or stratified. The cells are long and narrow. The nucleus is elongated and located on the basal side of the cell. Ciliated columnar epithelium is composed of simple columnar epithelial cells that display cilia on their apical surfaces.

 

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OpenStax, Epithelial Tissue. OpenStax CNX. Dec 15, 2016 http://cnx.org/contents/a16a9513-1ac9-495d-9096-bb8b31905a44@5. © Dec 15, 2016 OpenStax. Textbook content produced by OpenStax is licensed under a Creative Commons Attribution License 4.0 license.