Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

21. The Immune System

Phagocytosis

Anatomy & Physiology

21. The Immune System

Phagocytosis

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Multiple Choice

Which of the following statements about phagosomes and phagolysosomes are true?

Phagosomes are vesicles surrounding an engulfed microbe.

Phagosomes can be found in neutrophils, macrophages, and T cells.

Phagolysosomes destroy the engulfed microbe with digestive enzymes.

Phagolysosomes are the fusion of a phagosome and a lysosome.

A and C.

B and D.

A, C, and D.

All of the above.

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Verified step by step guidance

Understand the role of phagosomes: Phagosomes are vesicles that form around a microbe when it is engulfed by a cell. This process is part of the immune response, where cells like neutrophils and macrophages ingest harmful pathogens.

Identify the cells involved: Phagosomes are typically found in phagocytic cells such as neutrophils and macrophages. T cells are not primarily involved in phagocytosis, so the statement about T cells is incorrect.

Learn about phagolysosomes: Phagolysosomes are formed when a phagosome fuses with a lysosome. Lysosomes contain digestive enzymes that help break down the engulfed microbe, effectively destroying it.

Evaluate the statements: Based on the definitions, the true statements are: 'Phagosomes are vesicles surrounding an engulfed microbe,' 'Phagolysosomes destroy the engulfed microbe with digestive enzymes,' and 'Phagolysosomes are the fusion of a phagosome and a lysosome.'

Determine the correct answer: The correct answer is A, C, and D, as these statements accurately describe the functions and characteristics of phagosomes and phagolysosomes.