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Seminiferous Epithelium
MCQ questions and answers.
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MCQ Questions
1. What type of epithelium lines the seminiferous tubules?
A.
Germinal epithelium
B.
Simple squamous epithelium
C.
Ciliated columnar epithelium
D.
Transitional epithelium
Correct Answer:
Germinal epithelium
Explanation:
The seminiferous tubules are lined by germinal epithelium, which contains developing sperm-forming cells and Sertoli cells.
2. Which cells in the seminiferous epithelium develop into spermatozoa?
A.
Germ cells
B.
Red blood cells
C.
Muscle cells
D.
Nerve cells
Correct Answer:
Germ cells
Explanation:
Germ cells in the seminiferous epithelium undergo spermatogenesis and ultimately form spermatozoa.
3. Which supportive cells are present among the developing germ cells in the seminiferous epithelium?
A.
Sertoli cells
B.
Platelets
C.
Osteocytes
D.
Chondrocytes
Correct Answer:
Sertoli cells
Explanation:
Sertoli cells are supporting cells of the seminiferous epithelium and surround developing germ cells.
4. Where are the earliest germ cells generally located in a seminiferous tubule?
A.
Near the basement membrane
B.
Only in the lumen
C.
Outside the testis
D.
Inside blood vessels
Correct Answer:
Near the basement membrane
Explanation:
The earliest germ cells, including spermatogonia, are located near the basement membrane of the seminiferous epithelium.
5. Which cells are closest to the lumen of a seminiferous tubule during sperm formation?
A.
Maturing spermatids
B.
Spermatogonia
C.
Bone cells
D.
Red blood cells
Correct Answer:
Maturing spermatids
Explanation:
As germ cells mature, they move toward the lumen, where maturing spermatids are found before spermatozoa are released.
6. What is the main role of Sertoli cells in the seminiferous epithelium?
A.
Support developing germ cells
B.
Carry oxygen in blood
C.
Contract skeletal muscles
D.
Form bone tissue
Correct Answer:
Support developing germ cells
Explanation:
Sertoli cells provide structural and nutritional support to the developing germ cells within the seminiferous epithelium.
7. Which cell type is found at the basal region of the seminiferous epithelium?
A.
Spermatogonia
B.
Spermatozoa
C.
Mature red blood cells
D.
Platelets
Correct Answer:
Spermatogonia
Explanation:
Spermatogonia are located at the basal region of the seminiferous epithelium, close to the basement membrane.
8. What is the lumen of a seminiferous tubule?
A.
The central space inside the tubule
B.
The outer covering of the testis
C.
A blood-filled chamber
D.
A layer of bone tissue
Correct Answer:
The central space inside the tubule
Explanation:
The lumen is the central cavity of the seminiferous tubule into which developing spermatozoa are released.
9. Which process takes place in the seminiferous epithelium?
A.
Spermatogenesis
B.
Digestion of food
C.
Formation of bile
D.
Filtration of urine
Correct Answer:
Spermatogenesis
Explanation:
Spermatogenesis, the formation and development of sperm cells, occurs within the seminiferous epithelium.
10. In the seminiferous epithelium, developing germ cells generally move in which direction as they mature?
A.
From the basement membrane toward the lumen
B.
From the lumen toward the basement membrane only
C.
From blood vessels into bone
D.
From the testis into the stomach
Correct Answer:
From the basement membrane toward the lumen
Explanation:
During spermatogenesis, germ cells develop progressively from the basal region near the basement membrane toward the lumen of the seminiferous tubule.
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