Lymphatic System: Organization and Function

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What is the primary function of lymph nodes in the lymphatic system?

To produce antibodies against pathogens

To drain lymph into the circulatory system

To filter and inspect lymph by lymphocytes (correct)

To collect and store lymphatic fluids

Which type of immune cell is responsible for producing antibodies?

T lymphocytes

Macrophages

B lymphocytes (correct)

Natural killer cells

What is the name of the larger duct that drains lymph from the rest of the body into the subclavian vein?

Thoracic duct (correct)

Left lymphatic duct

Subclavian duct

Right lymphatic duct

Which type of immune cell is most effective against bacterial infections?

Neutrophils (D) Signup and view all the answers

Where are lymph tissues more prevalent in the body?

In areas exposed to the outside environment (A) Signup and view all the answers

What is the function of IgE antibodies?

Triggering the release of histamine and other inflammatory molecules (D) Signup and view all the answers

How do B cells rapidly mutate to create new sequences?

Somatic hypermutation (D) Signup and view all the answers

What is the primary function of Natural killer cells?

Innate immunity (C) Signup and view all the answers

Where are T-cells 'trained'?

Thymus (D) Signup and view all the answers

How do the variety of antibodies arise from a limited number of genes?

Somatic recombination and somatic hypermutation (A) Signup and view all the answers

What is the primary response of the adaptive immune system to a pathogen?

Attacking and destroying foreign cells or diseased host cells (C) Signup and view all the answers

What is the main function of T-cells in cellular immunity?

Directly attacking and destroying foreign cells or diseased host cells (D) Signup and view all the answers

What is the characteristic of immunological memory in adaptive immunity?

A stronger response to a pathogen after initial exposure (B) Signup and view all the answers

What type of immunity involves the direct destruction of foreign cells or diseased host cells?

Cellular immunity (C) Signup and view all the answers

What is the role of B-cells in humoral immunity?

Producing antibodies to tag pathogens for destruction (C) Signup and view all the answers

What type of disease agents are effectively targeted by Adaptive Immunity?

Extracellular viruses, bacteria, yeasts, and protozoans (A) Signup and view all the answers

What is the result of natural active production of antibodies?

Antibodies are produced as a result of infection (D) Signup and view all the answers

What is the function of the C region of an antibody?

Determines the mechanism of the antibody's action (C) Signup and view all the answers

What is the term for the part of the antibody that combines to form the antigen-binding site?

V region (A) Signup and view all the answers

What is the term for antibodies produced by another person or animal and received through blood plasma or serum?

Artificial passive immunity (B) Signup and view all the answers

What is the primary mechanism of Type 1 Hypersensitivity reactions?

IgE mediated reaction (B) Signup and view all the answers

Which type of hypersensitivity reaction is responsible for autoimmune diseases such as acute glomerulonephritis and systemic lupus erythematosus?

Type 3 Hypersensitivity (B) Signup and view all the answers

What is the characteristic time frame for the onset of Type 4 Hypersensitivity reactions?

12-72 hours after exposure (A) Signup and view all the answers

What is the primary consequence of the immune system not distinguishing between self and foreign antigens?

Autoimmune diseases (C) Signup and view all the answers

What is the name of the severe and immediate reaction that can be fatal?

Anaphylaxis (C) Signup and view all the answers

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