BIOS 252 Week 1 Quiz Exam 3 (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. What is the main function of lymph nodes?
A. Filter blood
B. Filter lymph and trap pathogens
C. Produce hormones
D. Absorb nutrients
Correct answer: B
Rationale: Lymph nodes filter lymph, trap pathogens, and activate
lymphocytes for immune responses.
2. Which lymphatic organ is largest in adults?
A. Thymus
B. Spleen
C. Tonsils
D. Lymph nodes
,Correct answer: B
Rationale: The spleen filters blood, stores platelets, and contains red
and white pulp.
3. Which lymphatic organ shrinks with age?
A. Thymus
B. Spleen
C. Tonsils
D. Lymph nodes
Correct answer: A
Rationale: The thymus is largest in children and involutes after
puberty but continues limited T cell production.
4. Which WBC type produces antibodies?
A. T lymphocytes
B. B lymphocytes
C. NK cells
D. Neutrophils
Correct answer: B
Rationale: B cells differentiate into plasma cells, which secrete
antibodies for humoral immunity.
5. Which lymphatic organ is located in the mediastinum?
,A. Thymus
B. Spleen
C. Lymph nodes
D. Tonsils
Correct answer: A
Rationale: The thymus sits above the heart and is involved in T cell
maturation.
6. Which lymphatic structure absorbs dietary fats?
A. Thoracic duct
B. Lacteals
C. Right lymphatic duct
D. Lymph nodes
Correct answer: B
Rationale: Lacteals in the small intestine absorb lipids and transport
them as chyle.
7. Which WBC type provides innate immunity against virus-
infected cells?
A. B lymphocytes
B. Cytotoxic T cells
C. NK cells
D. Monocytes
, Correct answer: C
Rationale: Natural killer (NK) cells kill infected or abnormal cells
without prior sensitization.
8. Which lymphatic organ traps pathogens entering the oral
cavity?
A. Tonsils
B. Thymus
C. Spleen
D. Lymph nodes
Correct answer: A
Rationale: Tonsils are lymphoid tissues in the pharynx that trap and
neutralize pathogens.
9. Which lymphatic organ filters blood and removes old RBCs?
A. Lymph nodes
B. Spleen
C. Thymus
D. Tonsils
Correct answer: B
Rationale: The spleen removes old or damaged red blood cells and
pathogens from circulation.
10. Which lymphatic vessels have valves to prevent backflow?
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. What is the main function of lymph nodes?
A. Filter blood
B. Filter lymph and trap pathogens
C. Produce hormones
D. Absorb nutrients
Correct answer: B
Rationale: Lymph nodes filter lymph, trap pathogens, and activate
lymphocytes for immune responses.
2. Which lymphatic organ is largest in adults?
A. Thymus
B. Spleen
C. Tonsils
D. Lymph nodes
,Correct answer: B
Rationale: The spleen filters blood, stores platelets, and contains red
and white pulp.
3. Which lymphatic organ shrinks with age?
A. Thymus
B. Spleen
C. Tonsils
D. Lymph nodes
Correct answer: A
Rationale: The thymus is largest in children and involutes after
puberty but continues limited T cell production.
4. Which WBC type produces antibodies?
A. T lymphocytes
B. B lymphocytes
C. NK cells
D. Neutrophils
Correct answer: B
Rationale: B cells differentiate into plasma cells, which secrete
antibodies for humoral immunity.
5. Which lymphatic organ is located in the mediastinum?
,A. Thymus
B. Spleen
C. Lymph nodes
D. Tonsils
Correct answer: A
Rationale: The thymus sits above the heart and is involved in T cell
maturation.
6. Which lymphatic structure absorbs dietary fats?
A. Thoracic duct
B. Lacteals
C. Right lymphatic duct
D. Lymph nodes
Correct answer: B
Rationale: Lacteals in the small intestine absorb lipids and transport
them as chyle.
7. Which WBC type provides innate immunity against virus-
infected cells?
A. B lymphocytes
B. Cytotoxic T cells
C. NK cells
D. Monocytes
, Correct answer: C
Rationale: Natural killer (NK) cells kill infected or abnormal cells
without prior sensitization.
8. Which lymphatic organ traps pathogens entering the oral
cavity?
A. Tonsils
B. Thymus
C. Spleen
D. Lymph nodes
Correct answer: A
Rationale: Tonsils are lymphoid tissues in the pharynx that trap and
neutralize pathogens.
9. Which lymphatic organ filters blood and removes old RBCs?
A. Lymph nodes
B. Spleen
C. Thymus
D. Tonsils
Correct answer: B
Rationale: The spleen removes old or damaged red blood cells and
pathogens from circulation.
10. Which lymphatic vessels have valves to prevent backflow?
