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BIOS 255 WEEK 7 QUIZ EXAM 2 (Latest Update 2026 / 2027) Anatomy and Physiology IV with Lab | Questions & Answers | 100% Correct | Grade A – Chamberlain

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BIOS 255 WEEK 7 QUIZ EXAM 2 (Latest Update 2026 / 2027) Anatomy and Physiology IV with Lab | Questions & Answers | 100% Correct | Grade A – Chamberlain

Institution
BIOS 255
Course
BIOS 255

Content preview

BIOS 255 WEEK 7 QUIZ EXAM 2 (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A –
Chamberlain

1. The main function of the lymphatic system is:
r. r. r. r. r. r. r.




A. Pump blood
r. r.




B. Defend the body against infections
r. r. r. r. r.




C. Digest fats
r. r.




D. Transport oxygen
r. r.




Correct Answer: B r. r.




Rationale: The lymphatic system transports lymph and produces
r. r. r. r. r. r. r.




lymphocytes to fight infections.
r. r. r. r.




2. Lymph is derived from:
r. r. r. r.




A. Plasma
r.




B. Interstitial fluid
r. r.




C. Red blood cells
r. r. r.




D. Platelets
r.




Correct Answer: B r. r.




Rationale: Lymph forms when interstitial fluid is collected into
r. r. r. r. r. r. r. r.




lymphatic vessels.
r. r.

,3. Which organ filters blood and stores lymphocytes?
r. r. r. r. r. r. r.




A. Liver
r.




B. Spleen
r.




C. Kidney
r.




D. Pancreas
r.




Correct Answer: B r. r.




Rationale: The spleen removes old red blood cells and stores
r. r. r. r. r. r. r. r. r.




immune cells for defense.
r. r. r. r.




4. Tonsils function to:
r. r. r.




A. Produce bile
r. r.




B. Trap pathogens entering through mouth and nose
r. r. r. r. r. r. r.




C. Filter blood
r. r.




D. Store hormones
r. r.




Correct Answer: B r. r.




Rationale: Tonsils are lymphoid tissues that protect against
r. r. r. r. r. r. r.




ingested or inhaled pathogens.
r. r. r. r.




5. The thymus gland is responsible for:
r. r. r. r. r. r.




A. Producing insulin
r. r.




B. Maturing T-lymphocytes
r. r.




C. Storing red blood cells
r. r. r. r.




D. Detoxifying blood
r. r.




Correct Answer: B r. r.

,Rationale: The thymus provides an environment for T-cells to
r. r. r. r. r. r. r. r.




mature and differentiate.
r. r. r.




6. Innate immunity is:
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A. Present at birth and non-specific
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B. Acquired after infection
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C. Provided by vaccines
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D. Only passive
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Correct Answer: A
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Rationale: Innate immunity is the body’s first line of defense and is
r. r. r. r. r. r. r. r. r. r. r.




non-specific.
r.




7. Acquired immunity develops after:
r. r. r. r.




A. Birth only
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B. Vaccination or infection
r. r. r.




C. Fever
r.




D. Histamine release
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Correct Answer: B
r. r.




Rationale: Acquired immunity develops after exposure to specific
r. r. r. r. r. r. r.




antigens.
r.




8. Antibodies are produced by:
r. r. r. r.




A. T-cells
r.




B. B-cells
r.




C. Macrophages
r.

, D. NK cells
r. r.




Correct Answer: B r. r.




Rationale: B-lymphocytes differentiate into plasma cells which
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secrete antibodies.
r. r.




9. Helper T-cells:
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A. Kill infected cells directly
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B. Activate B-cells and cytotoxic T-cells
r. r. r. r. r.




C. Produce antibodies
r. r.




D. Transport oxygen
r. r.




Correct Answer: B r. r.




Rationale: Helper T-cells coordinate the adaptive immune response
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by stimulating other immune cells.
r. r. r. r. r.




10. Cytotoxic T-cells:
r. r.




A. Produce antibodies
r. r.




B. Destroy infected or abnormal cells
r. r. r. r. r.




C. Transport oxygen
r. r.




D. Release histamine
r. r.




Correct Answer: B r. r.




Rationale: Cytotoxic T-cells kill cells infected with viruses or
r. r. r. r. r. r. r. r.




transformed by cancer.
r. r. r.




11. First line of defense includes:
r. r. r. r. r.

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Institution
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Course
BIOS 255

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