Lymphatic and Immune System Chapter 21.1 Quiz

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What is the major function of the lymphatic system?

Transport dietary lipids and fat-soluble vitamins to the liver (correct)
Absorb excess nutrients from the bloodstream
Destroy pathogens in the body
Regulate body temperature

How does lymph move through the lymphatic vessels?

Through phagocytosis
By nervous system impulses
By skeletal muscle contraction, breathing, and body movements (correct)
Active pumping by the lymphatic system

Which areas of the body lack lymphatic vessels?

Muscles and skin
Heart and lungs
Liver and kidneys
Bone marrow and central nervous system (CNS) (correct)

What is a major function of B cells in the immune system?

Produce plasma cells that bind to antigens (D) Signup and view all the answers

Where do all leukocytes originate from?

Red marrow (D) Signup and view all the answers

What is the role of granular leukocytes in the immune system?

Help mediate immune response against parasites and pathogens (B) Signup and view all the answers

What is the primary function of plasma cells?

To secrete soluble antibodies (A) Signup and view all the answers

Which of the following statements about T cells is correct?

T cells can secrete chemokines to bring other immune cells to the area (D) Signup and view all the answers

Where do B cells develop?

In the red bone marrow (B) Signup and view all the answers

What is the primary function of Natural Killer cells?

To provide the first line of defense against viruses and some cancers (B) Signup and view all the answers

Which of the following is NOT considered a secondary lymphoid organ?

Thymus gland (D) Signup and view all the answers

What is the primary function of lymph nodes?

To remove debris and pathogens from lymph (A) Signup and view all the answers

Which of the following is NOT a characteristic of germinal centers?

Produce red blood cells (B) Signup and view all the answers

What is the primary function of the spleen?

To filter blood (D) Signup and view all the answers

Which of the following is NOT a characteristic of lymphoid nodules?

Surrounded by a fibrous capsule (D) Signup and view all the answers

What is the primary function of tonsils?

To develop immunity to oral pathogens (A) Signup and view all the answers

Where can mucosa-associated lymphoid tissue (MALT) be found?

In the gastrointestinal tract, breast tissue, lungs, and eyes (C) Signup and view all the answers

What is the primary function of bronchus-associated lymphoid tissue (BALT)?

To provide an effective immune response against inhaled pathogens (B) Signup and view all the answers

Which of the following is NOT a barrier defense mechanism?

Macrophages (A) Signup and view all the answers

What is the primary function of natural killer cells in the innate immune system?

Induction of apoptosis in infected cells (A) Signup and view all the answers

What is the role of pattern recognition receptors in the innate immune system?

To recognize and respond to pathogen-associated molecular patterns (C) Signup and view all the answers

Which of the following is NOT a component of the inflammatory response?

Antibody production (B) Signup and view all the answers

What is the primary function of the adaptive immune response?

To recognize and specifically attack a wide variety of pathogens (C) Signup and view all the answers

What is the role of major histocompatibility complex (MHC) molecules in T cell recognition?

To present antigens to T cells for recognition (B) Signup and view all the answers

Which type of MHC molecule is expressed by most human cells?

Class I MHC (C) Signup and view all the answers

What is the primary difference between the primary and secondary adaptive immune responses?

The secondary response is more severe due to the presence of immunological memory (D) Signup and view all the answers

What is the role of cytokines and chemokines in the immune response?

To allow communication and attraction of immune cells (C) Signup and view all the answers

What is the primary function of macrophages in the immune response?

To stimulate phagocytosis at the site of infection (D) Signup and view all the answers

Which of the following is the correct order of events in T cell maturation?

Positive selection, negative selection, apoptosis (B) Signup and view all the answers

What is the primary function of helper T cells (Th1 and Th2 cells)?

To secrete cytokines and enhance other immune responses (B) Signup and view all the answers

Which of the following is NOT a function of antibodies produced by B cells?

Undergoing clonal expansion and differentiation (A) Signup and view all the answers

What is the difference between active and passive immunity?

Active immunity stimulates memory cell production, while passive immunity involves the transfer of antibodies (A) Signup and view all the answers

What is the process by which antibody levels rise in the blood as pathogen levels decline, and vice versa?

Seroconversion (B) Signup and view all the answers

What is the primary function of IgA antibodies in the mucosal immune response?

To neutralize pathogens and prevent them from binding to receptors (A) Signup and view all the answers

Which of the following is the primary mechanism by which the body fights viral infections?

Natural killer cells, interferons, and cytotoxic T cells (A) Signup and view all the answers

What is the process by which a mature B cell recognizes an antigen and rapidly divides to produce effector and memory B cells?

Clonal expansion (B) Signup and view all the answers

What is the primary function of regulatory T cells in the immune system?

To suppress other T cell immune responses (C) Signup and view all the answers