BIOS 256 WEEK 2 QUIZ EXAM 3
(Latest Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A –
Chamberlain
1. Which system is responsible for protecting the body from
pathogens?
A. Skeletal system
B. Immune system
C. Digestive system
D. Muscular system
Correct Answer: B
Rationale: The immune system detects and destroys pathogens to
protect the body.
2. Which cells are the main phagocytes in the immune system?
A. Lymphocytes
B. Macrophages
C. Red blood cells
D. Platelets
,Correct Answer: B
Rationale: Macrophages engulf and digest pathogens and debris.
3. Which lymphocytes produce antibodies?
A. T cells
B. B cells
C. NK cells
D. Neutrophils
Correct Answer: B
Rationale: B lymphocytes differentiate into plasma cells to produce
antibodies.
4. Which lymphocytes destroy virus-infected cells?
A. T cytotoxic cells
B. B cells
C. NK cells
D. Macrophages
Correct Answer: A
Rationale: Cytotoxic T cells recognize and kill infected or abnormal
cells.
5. What is the role of helper T cells?
A. Kill pathogens
B. Activate B cells and cytotoxic T cells
,C. Produce antibodies
D. Engulf pathogens
Correct Answer: B
Rationale: Helper T cells coordinate the immune response by
activating other immune cells.
6. Which organ is the primary site of T cell maturation?
A. Spleen
B. Thymus
C. Bone marrow
D. Lymph nodes
Correct Answer: B
Rationale: T cells mature in the thymus before entering circulation.
7. Which organ filters lymph and stores lymphocytes?
A. Spleen
B. Lymph nodes
C. Thymus
D. Bone marrow
Correct Answer: B
Rationale: Lymph nodes filter lymph and contain immune cells that
respond to pathogens.
8. Which organ filters blood and removes old RBCs?
, A. Thymus
B. Spleen
C. Liver
D. Kidney
Correct Answer: B
Rationale: The spleen filters blood, removes old red cells, and
supports immunity.
9. What is the main function of the inflammatory response?
A. Increase hormone secretion
B. Protect against pathogens and repair tissue
C. Digest nutrients
D. Produce red blood cells
Correct Answer: B
Rationale: Inflammation recruits immune cells, isolates pathogens,
and promotes healing.
10. Which chemical mediators trigger inflammation?
A. Hormones
B. Histamine and prostaglandins
C. Enzymes
D. Antibodies
(Latest Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A –
Chamberlain
1. Which system is responsible for protecting the body from
pathogens?
A. Skeletal system
B. Immune system
C. Digestive system
D. Muscular system
Correct Answer: B
Rationale: The immune system detects and destroys pathogens to
protect the body.
2. Which cells are the main phagocytes in the immune system?
A. Lymphocytes
B. Macrophages
C. Red blood cells
D. Platelets
,Correct Answer: B
Rationale: Macrophages engulf and digest pathogens and debris.
3. Which lymphocytes produce antibodies?
A. T cells
B. B cells
C. NK cells
D. Neutrophils
Correct Answer: B
Rationale: B lymphocytes differentiate into plasma cells to produce
antibodies.
4. Which lymphocytes destroy virus-infected cells?
A. T cytotoxic cells
B. B cells
C. NK cells
D. Macrophages
Correct Answer: A
Rationale: Cytotoxic T cells recognize and kill infected or abnormal
cells.
5. What is the role of helper T cells?
A. Kill pathogens
B. Activate B cells and cytotoxic T cells
,C. Produce antibodies
D. Engulf pathogens
Correct Answer: B
Rationale: Helper T cells coordinate the immune response by
activating other immune cells.
6. Which organ is the primary site of T cell maturation?
A. Spleen
B. Thymus
C. Bone marrow
D. Lymph nodes
Correct Answer: B
Rationale: T cells mature in the thymus before entering circulation.
7. Which organ filters lymph and stores lymphocytes?
A. Spleen
B. Lymph nodes
C. Thymus
D. Bone marrow
Correct Answer: B
Rationale: Lymph nodes filter lymph and contain immune cells that
respond to pathogens.
8. Which organ filters blood and removes old RBCs?
, A. Thymus
B. Spleen
C. Liver
D. Kidney
Correct Answer: B
Rationale: The spleen filters blood, removes old red cells, and
supports immunity.
9. What is the main function of the inflammatory response?
A. Increase hormone secretion
B. Protect against pathogens and repair tissue
C. Digest nutrients
D. Produce red blood cells
Correct Answer: B
Rationale: Inflammation recruits immune cells, isolates pathogens,
and promotes healing.
10. Which chemical mediators trigger inflammation?
A. Hormones
B. Histamine and prostaglandins
C. Enzymes
D. Antibodies
