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BIOS 255 WEEK 7 QUIZ EXAM 3 (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 3 (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 3 (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A –
Chamberlain

1. The primary role of the lymphatic system is:
r. r. r. r. r. r. r.




A. Pump blood throughout the body
r. r. r. r. r.




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




C. Transport oxygen
r. r.




D. Digest nutrients
r. r.




Correct Answer: B r. r.




Rationale: The lymphatic system transports lymph, filters
r. r. r. r. r. r.




pathogens, and produces immune cells.
r. r. r. r. r.




2. Lymph originates from:
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 is formed when interstitial fluid enters lymphatic
r. r. r. r. r. r. r. r.




capillaries.
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 filters old red blood cells and houses
r. r. r. r. r. r. r. r. r.




lymphocytes for immune defense.
r. r. r. r.




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




A. Produce insulin
r. r.




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




C. Filter blood
r. r.




D. Store lymphocytes
r. r.




Correct Answer: B r. r.




Rationale: Tonsils are lymphoid tissue that protect the body against
r. r. r. r. r. r. r. r. r.




inhaled or ingested 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-cell
r. r. r. r. r. r. r.




differentiation and maturation.
r. r. r.




6. Innate immunity is:
r. r. r.




A. Present at birth and non-specific
r. r. r. r. r.




B. Acquired after infection
r. r. r.




C. Only through vaccination
r. r. r.




D. Only passive
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Correct Answer: A
r. r.




Rationale: Innate immunity is the body’s first line of defense and
r. r. r. r. r. r. r. r. r. r.




responds non-specifically to pathogens.
r. r. r. r.




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




A. Birth only
r. r.




B. Vaccination or infection
r. r. r.




C. Fever
r.




D. Histamine release
r. r.




Correct Answer: B
r. r.




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




antigens, providing long-term protection.
r. r. r. 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-cells differentiate into plasma cells that secrete
r. r. r. r. r. r. r.




antibodies.
r.




9. Helper T-cells:
r. r.




A. Kill infected cells directly
r. r. r. r.




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 immune responses by
r. r. r. r. r. r.




activating other immune cells.
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 virus-infected and transformed
r. r. r. r. r. r.




cells.
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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