1. Transitional epithelium is mainly found lining which organ?
A.
Urinary bladder
B.
Stomach
C.
Lung alveoli
D.
Blood vessels
Correct Answer:
Urinary bladder
Explanation:
Transitional epithelium lines the urinary bladder, where it allows the wall to stretch as urine accumulates.
2. What is the main function of transitional epithelium?
A.
Absorption of digested food
B.
Stretching and returning to its original shape
C.
Exchange of respiratory gases
D.
Secretion of digestive enzymes
Correct Answer:
Stretching and returning to its original shape
Explanation:
Transitional epithelium can change its shape and stretch when the urinary organ fills with urine.
3. Transitional epithelium is a type of which epithelial tissue?
A.
Simple squamous epithelium
B.
Simple cuboidal epithelium
C.
Compound or stratified epithelium
D.
Simple columnar epithelium
Correct Answer:
Compound or stratified epithelium
Explanation:
Transitional epithelium has several layers of cells, so it is classified as compound or stratified epithelium.
4. The shape of the surface cells of transitional epithelium changes when the tissue is stretched. Which shape do they become when stretched?
A.
Flat
B.
Star-shaped
C.
Spindle-shaped
D.
Ciliated
Correct Answer:
Flat
Explanation:
When transitional epithelium is stretched, its surface cells become flatter, allowing the lining to expand.
5. Which urinary structure is lined by transitional epithelium?
A.
Ureter
B.
Urethral opening only
C.
Renal artery
D.
Glomerulus
Correct Answer:
Ureter
Explanation:
The ureter is lined by transitional epithelium, which helps it accommodate changes in the flow and volume of urine.
6. Transitional epithelium is especially suited for organs that undergo changes in:
A.
Length and volume
B.
Blood pressure only
C.
Temperature only
D.
Color
Correct Answer:
Length and volume
Explanation:
Its ability to stretch makes transitional epithelium suitable for urinary organs that change in size as they fill and empty.
7. When the urinary bladder is empty, the surface cells of transitional epithelium are generally:
A.
More rounded or dome-shaped
B.
Always completely flat
C.
Long and hair-like
D.
Cylindrical with cilia
Correct Answer:
More rounded or dome-shaped
Explanation:
In an empty bladder, the surface cells of transitional epithelium appear rounded or dome-shaped and become flatter when stretched.
8. Which feature helps transitional epithelium protect the urinary bladder from urine?
A.
Its multilayered arrangement
B.
Its single layer of thin cells
C.
Its numerous blood vessels
D.
Its digestive glands
Correct Answer:
Its multilayered arrangement
Explanation:
The multiple cell layers of transitional epithelium provide protection to the urinary bladder lining.
9. Transitional epithelium is also commonly called:
A.
Urothelium
B.
Mesothelium
C.
Endothelium
D.
Pseudostratified epithelium
Correct Answer:
Urothelium
Explanation:
Urothelium is another name for transitional epithelium, which lines parts of the urinary system.
10. Which property of transitional epithelium is most important in the urinary bladder?
A.
Ability to stretch without tearing
B.
Ability to absorb oxygen rapidly
C.
Ability to produce hormones
D.
Ability to move food by cilia
Correct Answer:
Ability to stretch without tearing
Explanation:
Transitional epithelium allows the urinary bladder to expand as it fills while maintaining a protective lining.
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