1. Which cells provide nourishment to developing sperm cells in the seminiferous tubules?
A.
Sertoli cells
B.
Leydig cells
C.
Red blood cells
D.
Smooth muscle cells
Correct Answer:
Sertoli cells
Explanation:
Sertoli cells support developing sperm cells by supplying them with nourishment within the seminiferous tubules.
2. What is a major supportive function of Sertoli cells during sperm formation?
A.
Supporting developing germ cells
B.
Producing digestive enzymes
C.
Pumping blood through the testis
D.
Forming bone tissue
Correct Answer:
Supporting developing germ cells
Explanation:
Sertoli cells provide structural and nutritional support to developing germ cells during spermatogenesis.
3. Sertoli cells help protect developing sperm cells by forming which structure?
A.
Blood-testis barrier
B.
Nephron
C.
Alveolus
D.
Bile duct
Correct Answer:
Blood-testis barrier
Explanation:
Adjacent Sertoli cells form the blood-testis barrier, which protects developing sperm cells from harmful substances and immune reactions.
4. Which cells are located among developing germ cells and provide them with physical support?
A.
Sertoli cells
B.
Leydig cells
C.
Platelets
D.
Osteocytes
Correct Answer:
Sertoli cells
Explanation:
Sertoli cells extend through the seminiferous epithelium and physically support the developing germ cells.
5. Sertoli cells help maintain a suitable environment for which process?
A.
Spermatogenesis
B.
Blood clotting
C.
Urine filtration
D.
Food digestion
Correct Answer:
Spermatogenesis
Explanation:
Sertoli cells maintain the conditions needed for the development of germ cells into sperm during spermatogenesis.
6. Which activity of Sertoli cells helps remove leftover cytoplasm from developing sperm cells?
A.
Phagocytosis
B.
Photosynthesis
C.
Respiratory ventilation
D.
Bone resorption
Correct Answer:
Phagocytosis
Explanation:
Sertoli cells phagocytose residual cytoplasm released by developing sperm cells, helping their maturation.
7. The supportive cells of the seminiferous tubules that surround developing sperm cells are called what?
A.
Sertoli cells
B.
Leydig cells
C.
Epithelial cells of the bladder
D.
Pancreatic cells
Correct Answer:
Sertoli cells
Explanation:
Sertoli cells are positioned among the germ cells in seminiferous tubules and surround them as they develop.
8. Which function of Sertoli cells directly assists the maturation of sperm cells?
A.
Providing nutrients and support
B.
Producing red blood cells
C.
Storing urine
D.
Digesting fats in the intestine
Correct Answer:
Providing nutrients and support
Explanation:
Sertoli cells nourish and support germ cells, allowing them to mature properly into sperm cells.
9. Sertoli cells help separate developing germ cells from the blood through the formation of what?
A.
Tight junctions
B.
Cartilage rings
C.
Elastic ligaments
D.
Nerve endings
Correct Answer:
Tight junctions
Explanation:
Tight junctions between Sertoli cells form the blood-testis barrier and help protect developing germ cells.
10. Which statement about Sertoli cell support is correct?
A.
They protect and nourish developing sperm cells.
B.
They produce bile for digestion.
C.
They filter urine in the kidneys.
D.
They carry oxygen in the blood.
Correct Answer:
They protect and nourish developing sperm cells.
Explanation:
Sertoli cells support spermatogenesis by protecting developing germ cells and providing them with nourishment.
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