ZOO 115 B Lecture 2: Epithelial Tissues Mary Grace B.Dacuma, Ph.D.

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Questions and Answers

What is the primary function of epithelial tissues?

  • To provide protection
  • To form secretory portions and ducts of glands
  • To act as receptors for special senses
  • All of the above (correct)

Which type of epithelial tissue is characterized by cells that are taller than they are wide, with an ovoid nucleus near the base of the cell?

  • Cuboidal epithelium
  • Squamous epithelium
  • Columnar epithelium (correct)
  • Transitional epithelium

Which type of epithelial tissue has a single layer of cells, where all the cells are attached to the basement membrane?

  • Simple epithelium (correct)
  • Pseudostratified epithelium
  • Stratified epithelium
  • Transitional epithelium

Which type of epithelial tissue has several layers of cells, with the innermost layer being attached to the basement membrane?

<p>Stratified epithelium (B)</p> Signup and view all the answers

Which type of epithelial tissue has cells that change shape at each layer, with the innermost layer being attached to the basement membrane?

<p>Transitional epithelium (B)</p> Signup and view all the answers

Which type of epithelial tissue has a single layer of cells, but the cells are of varying heights, with all cells still attached to the basement membrane?

<p>Pseudostratified epithelium (D)</p> Signup and view all the answers

Which type of simple epithelium is found lining the follicles of the thyroid gland and the surface of the ovary?

<p>Simple cuboidal epithelium (B)</p> Signup and view all the answers

Which type of simple epithelium is found lining the stomach, small intestine, and large intestine?

<p>Simple columnar epithelium (D)</p> Signup and view all the answers

Which type of simple epithelium has a single layer of ciliated columnar cells?

<p>Ciliated simple columnar epithelium (A)</p> Signup and view all the answers

Which type of simple epithelium is found lining the trachea, primary bronchi, and auditory tube?

<p>Ciliated pseudostratified columnar epithelium (B)</p> Signup and view all the answers

What is the distinguishing feature of ciliated pseudostratified columnar epithelium?

<p>It has a single layer of columnar cells of varying heights, with cilia on the tallest cells. (D)</p> Signup and view all the answers

Which type of simple epithelium is found lining the oviduct, uterus, primary bronchi, paranasal sinuses, and central canal of the spinal cord?

<p>Ciliated simple columnar epithelium (D)</p> Signup and view all the answers

Which embryonic germ layer gives rise to the epithelial lining of the gastrointestinal tract and associated organs like the pancreas and liver?

<p>Endoderm (C)</p> Signup and view all the answers

Which component of an epithelial tissue provides structural support and anchors the epithelial cells?

<p>Basement membrane (C)</p> Signup and view all the answers

Which of the following is the functional component of an animal tissue?

<p>Parenchyma (C)</p> Signup and view all the answers

Which surface of an epithelial cell is exposed to the external environment or cavity?

<p>Apical surface (C)</p> Signup and view all the answers

Which of the following epithelial tissues is derived from the mesoderm germ layer?

<p>Endothelium lining blood vessels (D)</p> Signup and view all the answers

Which of the following structures is NOT a part of an epithelial tissue?

<p>Parenchyma (B)</p> Signup and view all the answers

Which type of epithelium is found lining the penile urethra and excretory duct of the parotid gland?

<p>Pseudostratified columnar epithelium (C)</p> Signup and view all the answers

In a non-keratinized stratified squamous epithelium, what is the characteristic of the apical cells?

<p>They retain individual nuclei and metabolic functions (D)</p> Signup and view all the answers

Where is the keratinized stratified squamous epithelium found?

<p>On the body surface (epidermis) (A)</p> Signup and view all the answers

What is the characteristic of the component cells in a stratified squamous epithelium?

<p>They vary in shape from base to surface (D)</p> Signup and view all the answers

Which type of epithelium is found lining the oral cavity, epiglottis, esophagus, vagina, and urethra?

<p>Non-keratinized stratified squamous epithelium (D)</p> Signup and view all the answers

Which of the following is not a type of stratified epithelium mentioned in the text?

<p>Stratified pseudostratified epithelium (D)</p> Signup and view all the answers

Which type of epithelium is found in the urinary bladder?

<p>Transitional epithelium (B)</p> Signup and view all the answers

In which of the following locations would you find stratified columnar epithelium?

<p>Fornix of conjunctiva and pharynx (A)</p> Signup and view all the answers

Which statement about stratified cuboidal epithelium is correct?

<p>It is a rare type of epithelium found in excretory ducts of large salivary glands, sweat glands, and pancreas. (B)</p> Signup and view all the answers

Which of the following statements about the structure of transitional epithelium is correct?

<p>The basal cells appear cuboidal or low columnar, while the apical cells are larger and dome-shaped. (B)</p> Signup and view all the answers

Which type of epithelium would you expect to find in the largest ducts of salivary glands?

<p>Stratified columnar epithelium (B)</p> Signup and view all the answers

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