Quiz: Anatomy_H1

Question 1

1. Choose one INCORRECT statement regarding epithelia.

Choices:

• Epithelia are very cellular tissues
• Epithelia contain no blood vessels
• Epithelia are not innervated
• Epithelia regenerate themselves through the division of stem cells

Answers:

• Epithelia are not innervated

Comments:

• Correct
• That’s right! Epithelia are avascular but are innervated i.e. have a nerve supply.
• Continue

Question 2

2. From the options listed below, choose the cell junctions that involve the cytoskeleton.

Choices:

• Zonula adherens
• Hemidesmosomes
• Desmosomes
• Gap junctions
• Tight junctions

Answers:

• Zonula adherens
• Hemidesmosomes
• Desmosomes

Comments:

• Correct
• That’s right! Desmosomes and hemidesmosomes link to intermediate filaments. Whereas, zonula adherens link to actin filaments.
• Continue

Question 3

3. From the options listed below, choose the organ(s), the internal surface(s) of which are NOT lined by stratified epithelia.

Choices:

• Small intestine
• Blood vessels
• Alveoli
• Oral cavity
• Vagina
• Esophagus
• Anus

Answers:

• Small intestine
• Blood vessels
• Alveoli

Comments:

• Correct
• That’s right! Alveoli, blood vessels and small intestine are lined with single layer simple epithelia. This is due to their need to facilitate molecular transport.
• Continue

Question 4

4. Paracellular molecular movement through an epithelial sheet is limited by _________.

Choices:

• Tight junctions
• Desmosomes
• Zonula adherens
• Gap junctions
• Hemidesmosomes
• Membrane-bound molecular transport proteins

Answers:

• Tight junctions

Comments:

• Correct
• That’s right! Tight junctions seal the paracellular space and therefore limit molecular movement between cells.
• Continue

Question 5

5. Which class of epithelium is several cell layers thick and has surface cells that are flat in shape?

Choices:

• stratified squamous
• simple columnar
• stratified cuboidal
• simple squamous
• simple cuboidal
• stratified columnar
• pseudostratified
• transitional

Answers:

• stratified squamous

Comments:

• Correct
• That's right! Stratified squamous epithelium has surface cells that are flat in shape with multiple cell layers.
• Continue

Question 6

6. Which class of epithelium is one cell layer thick and has surface cells that are tall in shape?

Choices:

• stratified squamous
• simple columnar
• stratified cuboidal
• simple squamous
• simple cuboidal
• stratified columnar
• pseudostratified
• transitional

Answers:

• simple columnar

Comments:

• Correct
• That's right! Simple columnar epithelium consists of a single layer of cells that are taller than they are wide.
• Continue

Question 7

7. Which class of epithelium is one cell layer thick and has surface cells that are just as tall as wide in shape?

Choices:

• stratified squamous
• simple columnar
• stratified cuboidal
• simple squamous
• simple cuboidal
• stratified columnar
• pseudostratified
• transitional

Answers:

• simple cuboidal

Comments:

• Correct
• That's right! Simple cuboidal epithelium contain a single layer of cells that are as tall as wide in shape.
• Continue

Question 8

8. This class of epithelium lines blood vessels, lymphatic vessels and chambers of the heart; in these sites, it is also referred to as “endothelium”.

Choices:

• stratified squamous
• simple columnar
• stratified cuboidal
• simple squamous
• simple cuboidal
• stratified columnar
• pseudostratified
• transitional

Answers:

• simple squamous

Comments:

• Correct
• That's right! Endothelium, the epithelium that is in contact with blood, is composed of simple squamous epithelium.
• Continue

Question 9

This class of epithelium appears stratified, but is in fact simple, as all cells are attached to an underlying basement membrane.

Choices:

• stratified squamous
• simple columnar
• stratified cuboidal
• simple squamous
• simple cuboidal
• stratified columnar
• pseudostratified
• transitional

Answers:

• pseudostratified

Comments:

• Correct
• That's right! Epithelial cells of the pseudostratified epithelium appear to be stratified. However, since all cells are in contact with basement membrane, it is considered as simple epithelium.
• Continue

Question 10

10. This class of epithelium consists of multiple layers of epithelial cells that allow for stretching.

Choices:

• stratified squamous
• simple columnar
• stratified cuboidal
• simple squamous
• simple cuboidal
• stratified columnar
• pseudostratified
• transitional

Answers:

• transitional

Comments:

• Correct
• That's right! Transitional epithelium is a stratified epithelium that lines surfaces which stretch and recoil (i.e urinary bladder and ureter).
• Continue

Question 11

11. ‘A’ indicates a simple squamous epithelial cell lining a blood vessel. What is the name of this class of epithelium in this specific location?

Choices:

• Pseudostratified ciliated epithelium with goblet cells
• Respiratory type epithelium
• Mesothelium
• Endothelium

Answers:

• Endothelium

Comments:

• Correct
• That's right! Endothelium is the simple squamous epithelium that lines blood vessel.
• Continue

Question 12

12. What class of epithelium is lining structure B?

Choices:

• Simple cuboidal epithelium
• Simple columnar epithelium
• Simple squamous epithelium
• Transitional epithelium

Answers:

• Simple cuboidal epithelium

Comments:

• Correct
• That's right! Simple cuboidal epithelial cells are as tall as they are wide. In this image, the cells are lining a duct where active processes of secretion and absorption take place.
• Continue

Question 13

13. Identify structural specializations A.

Choices:

• Microvilli
• Cilia
• Goblet cells
• Don't know

Answers:

• Cilia

Comments:

• Correct
• That's right! Cilia are highly motile, synchronized, finger-like extensions of apical cell membrane. They are specialized structures that can be found in the respiratory tract or uterine tube.
• Continue

Question 14

14. Identify the class of epithelium depicted. Be specific.

Choices:

• Simple columnar epithelium with brush border
• Pseudostratified ciliated columnar epithelium with goblet cells (”Respiratory Epithelium”)
• Transitional epithelium
• Stratified columnar epithelium

Answers:

• Pseudostratified ciliated columnar epithelium with goblet cells (”Respiratory Epithelium”)

Comments:

• Correct
• That's right! The respiratory epithelium refers to the pseudostratified ciliated columnar epithelium lining the respiratory tract.
• Continue

Question 15

15. Identify structural specializations A.

Choices:

• Microvilli
• Brush-border
• Brush border

Answers:

• Microvilli
• Brush-border
• Brush border

Comments:

• Correct
• That's right! Microvilli are specialized cell structures that increase the surface area of epithelia to maximize absorption and secretion. Unlike cilia, microvilli are shorter and give a brush-border appearance.
• Continue

Question 16

16. Identify the class of epithelium A. Be specific.

Choices:

• Simple cuboidal epithelium
• Simple columnar epithelium
• Stratified columnar epithelium
• Transitional epithelium

Answers:

• Simple columnar epithelium

Comments:

• Correct
• That's right! Simple columnar epithelium consists of cells that are tall in shape.
• Continue

Question 17

17. Identify the class of epithelium A. Be specific.

Choices:

• Stratified squamous non-keratinized epithelium
• Stratified columnar epithelium
• Stratified squamous keratinized epithelium
• Simple squamous epithelium

Answers:

• Stratified squamous keratinized epithelium

Comments:

• Correct
• That's right! Multiple layers of dead cells (without nuclei) can be seen on the free surface of stratified squamous keratinized epithelium due to the process of keratinization. This help to protect the body surface from dehydration.
• Continue

Question 18

18. Identify the class of epithelium A. Be specific.

Choices:

• Stratified squamous non-keratinized epithelium
• Stratified columnar epithelium
• Stratified squamous keratinized epithelium
• Simple squamous epithelium

Answers:

• Stratified squamous non-keratinized epithelium

Comments:

• Correct
• That's right! Stratified squamous non-keratinized epithelium lines internal surfaces that require protection from abrasion. This class of epithelium does NOT undergo keratinization, hence all cells contain nuclei, even those at the surface.
• Continue

Question 19

19. What organ will epithelium A line? Be specific.

Choices:

• Mouth
• Esophagus
• Vagina
• Cervix
• Anus

Answers:

• Mouth
• Esophagus
• Vagina
• Cervix
• Anus

Comments:

• Correct
• That's right! Stratified squamous non-keratinized epithelium lines internal surfaces such as mouth, esophagus, anus, vagina, cervix.
• Continue

Question 20

20. Identify the class of epithelium A. Be specific.

Choices:

• Simple cuboidal epithelium
• Stratified squamous epithelium
• Transitional epithelium
• Stratified columnar epithelium

Answers:

• Transitional epithelium

Comments:

• Correct
• That's right! Transitional epithelium can be identified by the dome-shaped cells on the surface.
• Continue

Question 21

21. What organ will epithelium A line? Be specific.

Choices:

• Urinary bladder
• Ureter
• Urethra
• Bladder

Answers:

• Urinary bladder
• Ureter
• Urethra
• Bladder

Comments:

• Correct
• That's right! Transitional epithelium lines surfaces that stretch and recoil, such as urinary bladder and ureter.
• Continue

Question 22

22. Identify the class of epithelium A. Be specific.

Choices:

• Stratified columnar epithelium
• Respiratory epithelium
• Simple columnar epithelium with microvilli
• Stratified squamous epithelium

Answers:

• Respiratory epithelium

Comments:

• Correct
• That's right! Respiratory epithelium refers to the pseudostratified ciliated columnar epithelium with goblet cells.
• Continue

Question 23

23. Identify the class of epithelium A. Be specific.

Choices:

• Pseudostratified ciliated columnar epithelium with goblet cells
• Pseudostratified columnar epithelium ciliated with goblet cells
• Respiratory epithelium

Answers:

• Pseudostratified ciliated columnar epithelium with goblet cells
• Pseudostratified columnar epithelium ciliated with goblet cells
• Respiratory epithelium

Comments:

• Correct
• That's right! Respiratory epithelium can be identified by the pseudostratified ciliated columnar epithelial cells. Faintly stained goblet cells are also seen.
• Continue

Question 24

24. Identify the class of epithelium A. Be specific.

Choices:

• Stratified squamous epithelium
• Stratified columnar epithelium
• Endothelium
• Stratified cuboidal epithelium

Answers:

• Stratified cuboidal epithelium

Comments:

• Correct
• That's right! Stratified cuboidal epithelium consists of a layer of cells that stack on top of another, with cuboidal cells being the surface layer.
• Continue

Question 25

25. Identify the class of epithelium A. Be specific.

Choices:

• Transitional epithelium
• Transitional

Answers:

• Transitional epithelium
• Transitional

Comments:

• Correct
• That's right! Transitional epithelium has surface cells that are domed in shape when the organ (bladder/ureter) is empty.
• Continue

Question 26

26. Identify the class of epithelium A. Be specific.

Choices:

• Simple squamous epithelium
• Simple squamous

Answers:

• Simple squamous epithelium
• Simple squamous

Comments:

• Correct
• That's right! Endothelial cells that line the blood vessels belong to the class of simple squamous epithelium.
• Continue

Question 27

27. Identify the class of epithelium A. Be specific.

Choices:

• Simple columnar epithelium
• Simple columnar
• Simple columnar epithelium with goblet cells
• Simple columnar epithelium with brush border
• Simple columnar epithelium with microvilli

Answers:

• Simple columnar epithelium
• Simple columnar
• Simple columnar epithelium with goblet cells
• Simple columnar epithelium with brush border
• Simple columnar epithelium with microvilli

Comments:

• Correct
• That's right! Simple columnar epithelium is one cell thick with tall cells. Specialized surface components such as microvilli and goblet cells can be seen in this slide.
• Continue

Question 28

Drag and Drop

Choices:

• Text Box 3 - Lines organs of the urinary system.
• Text Box 5 - Surface cell’s shape changes according to filling stage of the organ.
• Text Box 4 - Lines upper digestive tract.
• Text Box 6 - Prevent abrasion and pathogen attack.

Answers:

• Text Box 3 - Lines organs of the urinary system.
• Text Box 5 - Surface cell’s shape changes according to filling stage of the organ.
• Text Box 4 - Lines upper digestive tract.
• Text Box 6 - Prevent abrasion and pathogen attack.

Comments:

• Correct
• That's right! Diagram A shows the transitional epithelium and B shows the stratified squamous non-keratinized epithelium.
• Continue