1.
Lymph nodes in the neck region.
Correct Answer
A. Cervical nodes
Explanation
Cervical nodes are lymph nodes located in the neck region. Lymph nodes are part of the immune system and play a crucial role in filtering and trapping foreign particles, such as antigens. They are an essential component of acquired immunity, which is the immune response developed by the body after exposure to a specific antigen. Helper T cells are a type of white blood cell that play a central role in coordinating the immune response, including activating other immune cells. Therefore, the correct answer is cervical nodes, as they are specifically located in the neck region.
2.
Substance that the body recognizes as foreign and evokes an immune response
Correct Answer
D. Antigen
Explanation
An antigen is a substance that the body recognizes as foreign and triggers an immune response. When an antigen enters the body, it stimulates the immune system to produce antibodies, which are proteins that help to neutralize or eliminate the antigen. Antigens can be found on the surface of pathogens such as bacteria or viruses, as well as on the surface of cells from transplanted organs or tissues. The immune system's ability to recognize and respond to antigens is crucial for defending the body against infections and diseases.
3.
Production of antibodies and lymphocytes in response to exposure to an antigen
Correct Answer
C. Acquired immunity
Explanation
Acquired immunity refers to the immune response that the body develops after exposure to a specific antigen. This response involves the production of antibodies and lymphocytes, which are specialized white blood cells. These cells are responsible for recognizing and attacking the antigen, providing long-term protection against future infections. Cytokines are signaling molecules that regulate the immune response, while helper T cells play a crucial role in coordinating and enhancing the immune response. Adenoids, on the other hand, are a part of the lymphatic system but are not directly involved in acquired immunity.
4.
Lymphocyte that aids B cells in recognizing antigens and stimulating antibody production (T4 cell or CD4+ cell)
Correct Answer
A. Helper T cell
Explanation
A helper T cell is a type of lymphocyte that aids B cells in recognizing antigens and stimulating antibody production. Helper T cells release cytokines, which help activate B cells and enhance their ability to produce antibodies. Antigens are substances that stimulate an immune response, and B cells are responsible for producing antibodies to target and neutralize these antigens. Therefore, the correct answer is helper T cell.
5.
Mass of lymphatic tissue in the nasopharynx
Correct Answer
C. Adenoids
Explanation
The adenoids are a mass of lymphatic tissue located in the nasopharynx, which is the upper part of the throat behind the nose. They are part of the lymphoid organs and play a role in the immune system by producing antibodies to help fight off infections. The other options, lymph and axillary nodes, are not located in the nasopharynx and are not specifically associated with this area of the body.
6.
Cell (specialized macrophage) that digests foreign cells and helps B and T cells recognize and mark antigens for destruction
Correct Answer
A. Dendritic cell
Explanation
A dendritic cell is a specialized type of macrophage that plays a crucial role in the immune response. It digests foreign cells and presents their antigens to B and T cells, which helps in the recognition and marking of these antigens for destruction. Dendritic cells are known for their ability to capture, process, and present antigens effectively, making them essential for initiating and coordinating immune responses. They are often found in tissues that are in contact with the external environment, such as the skin and mucosal surfaces.
7.
T lymphocyte that directly kills foreign cells (T8 cell or CD8+ cell)
Correct Answer
C. Cytoxic T cell
Explanation
The correct answer is cytoxic T cell because it directly kills foreign cells. B cells are responsible for producing antibodies, while helper T cells assist in the immune response. However, cytoxic T cells specifically target and kill infected or abnormal cells, making them the correct answer in this context.
8.
Lymph nodes in the armpit
Correct Answer
B. Axillary nodes
Explanation
Axillary nodes are lymph nodes located in the armpit region. They are part of the lymphatic system and play a crucial role in filtering lymph fluid and trapping harmful substances such as bacteria, viruses, and cancer cells. Axillary nodes are important for immune responses and help in the production of lymphocytes and immunoglobulins, which are antibodies that fight against infections. Therefore, axillary nodes are the correct answer in this context.
9.
Proteins that aid and regulate the immune response
Correct Answer
C. Cytokines
Explanation
Cytokines are proteins that play a crucial role in aiding and regulating the immune response. They act as signaling molecules, allowing cells of the immune system to communicate with each other and coordinate their actions. Cytokines can stimulate or inhibit immune responses, depending on the specific circumstances. They are involved in various immune processes, such as inflammation, cell growth, and differentiation. Therefore, cytokines are the correct answer as they directly contribute to the immune response.
10.
Lymphocyte that originates in the bone marrow and transforms into a plasma cell to secrete antibodies
Correct Answer
B. B cell
Explanation
A B cell is a type of lymphocyte that originates in the bone marrow and has the ability to transform into a plasma cell. Plasma cells are responsible for secreting antibodies, which play a crucial role in the immune response. Therefore, the B cell is the correct answer as it matches the description given in the question.
11.
Thin, watery fluid found within lymphatic vessels
Correct Answer
C. LympH
Explanation
Lymph is a thin, watery fluid that is found within the lymphatic vessels. It is responsible for carrying waste materials, toxins, and immune cells throughout the body. Lymph plays a crucial role in the immune system, as it helps to remove bacteria, viruses, and other harmful substances from the body. It is filtered through lymph nodes and travels through lymph capillaries before being returned to the bloodstream. Lymph is also present in lymphoid organs, such as the spleen and thymus, where immune cells are produced and stored.
12.
Tiniest lymphatic vessels
Correct Answer
A. LympH capillaries
Explanation
Lymph capillaries are the smallest lymphatic vessels. These vessels are responsible for collecting excess fluid, waste materials, and pathogens from the body tissues and transporting them to the lymph nodes. The lymph capillaries are extremely thin-walled and have small openings that allow fluid to enter. They are found throughout the body and play a crucial role in the immune system by filtering and processing lymph fluid.
13.
Proteins (cytokines) secreted by T cells to aid and regulate the immune response
Correct Answer
B. Interferons and interleukins
Explanation
Interferons and interleukins are proteins secreted by T cells to aid and regulate the immune response. Interferons play a crucial role in defending against viral infections, while interleukins help in communication between immune cells and regulate inflammation. These proteins are essential for coordinating and modulating the immune system's response to pathogens and maintaining its overall balance and effectiveness. Immunoglobulins, immunotherapy, and interstitial fluid are not directly involved in the secretion and regulation of immune response proteins by T cells.
14.
Antibodies that are secreted by the plasma cells in response to the presence of an antigen
Correct Answer
C. Immunoglobulins
Explanation
Immunoglobulins are proteins that are secreted by plasma cells in response to the presence of an antigen. They play a crucial role in the immune response by binding to specific antigens and marking them for destruction by other immune cells. Immunotherapy, immunity, and interferons and interleukins are all related to the immune system, but they do not specifically refer to the antibodies secreted by plasma cells. Therefore, the correct answer is immunoglobulins.
15.
Body's ability to resist foreign oragnisms and toxins (immune response)
Correct Answer
D. Immunity
Explanation
The term "immunity" refers to the body's ability to resist foreign organisms and toxins, which is also known as the immune response. It involves the activation of various components of the immune system to recognize and eliminate these foreign substances. Immunotherapy and immunoglobulins are both related to the immune system and can be used to enhance or modulate immune responses. Antigens are substances that can trigger an immune response. However, out of all the given options, "immunity" is the best fit as it directly represents the body's ability to resist foreign organisms and toxins.
16.
Lymph nodes in the groin
Correct Answer
A. Inguinal nodes
Explanation
The lymph nodes in the groin are called inguinal nodes. These nodes are located in the inguinal area, which is the crease or fold where the thigh meets the lower abdomen. The inguinal nodes are an important part of the lymphatic system and play a crucial role in filtering and trapping bacteria, viruses, and other harmful substances. They are responsible for draining lymph fluid from the lower extremities, genitalia, and pelvic region. Inguinal nodes can become enlarged and tender in response to infections or diseases in the lower body, making them an important diagnostic tool for doctors.
17.
Stationary, solid lymphtic tissue along lymph vessels
Correct Answer
B. LympH node
Explanation
A lymph node is a stationary, solid lymphatic tissue found along lymph vessels. It is one of the lymphoid organs responsible for filtering and trapping foreign substances, such as bacteria and viruses, from the lymph fluid. Lymph nodes play a crucial role in the immune system by producing and storing immune cells that help fight infections and diseases. Therefore, the correct answer for this question is lymph node.
18.
Fluid in the spaces between cells
Correct Answer
C. Interstitial fluid
Explanation
The correct answer is interstitial fluid. Interstitial fluid refers to the fluid that is present in the spaces between cells in the body. It plays a crucial role in supplying nutrients and oxygen to cells, as well as removing waste products. It also helps maintain the balance of electrolytes and other substances in the body.
19.
Lymph nodes, spleen, and thymus gland; tissue through which lymph travels
Correct Answer
C. LympHoid organs
Explanation
The correct answer is lymphoid organs. Lymphoid organs are the tissues through which lymph travels, including lymph nodes, spleen, and thymus gland. These organs play a crucial role in the immune system by producing and storing lymphocytes, which are white blood cells that help fight infections and diseases. Lymph vessels, on the other hand, are responsible for carrying lymph fluid throughout the body. Plasma cells are a type of white blood cell that produces antibodies, while the pancreas is an organ involved in digestion and hormone regulation.
20.
Use of immune cells and antibodies or vaccines to treat and prevent disease
Correct Answer
D. Immunotherapy
Explanation
Immunotherapy refers to the use of immune cells, antibodies, or vaccines to treat and prevent diseases. It involves stimulating the body's immune system to recognize and attack specific antigens, such as cancer cells or pathogens. This approach harnesses the power of the immune system to fight against diseases and has shown promising results in the treatment of various conditions, including cancer. Therefore, immunotherapy is the correct answer as it encompasses the use of immune cells, antibodies, or vaccines for disease treatment and prevention.