Lymphatic System: Exam 2

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  • 1/31 Questions

    Lymphoid tissue that appears as a swelling of the mucosa in the oral cavity is called a(n) _______________________.

    • Peyer's patch
    • Tonsil
    • Thymus
    • Appendix
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Lymphatic System Quizzes & Trivia
About This Quiz

Lymphatic System: Exam 2 assesses knowledge on the structure and function of the lymphatic system, including lymph nodes, lymphatic ducts, and related physiological mechanisms. It is crucial for students in health sciences aiming to understand immune responses and lymphatic health.

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  • 2. 

    Which lymphatic structure drains lymph from the right upper limb and the right side of the head and thorax?

    • Lumbar trunk

    • Cisterna chyli

    • Thoracic duct

    • Right lymphatic duct

    Correct Answer
    A. Right lymphatic duct
    Explanation
    The right lymphatic duct is the correct answer because it is responsible for draining lymph from the right upper limb and the right side of the head and thorax. The other options, such as the lumbar trunk, cisterna chyli, and thoracic duct, are not specifically associated with draining lymph from these areas.

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  • 3. 

    Select the correct statement about lymph transport.

    • Under normal conditions, lymph vessels are very high-pressure conduits

    • Lymph transport depends on the movement of adjacent tissues, such as skeletal muscles

    • Lymph transport is faster than that occurring in veins

    • Lymph transport is only necessary when illness causes tissue swelling

    Correct Answer
    A. Lymph transport depends on the movement of adjacent tissues, such as skeletal muscles
    Explanation
    Lymph transport depends on the movement of adjacent tissues, such as skeletal muscles. This is because lymph vessels do not have a pumping mechanism like the heart in the circulatory system. Instead, the movement of surrounding muscles helps to squeeze the lymph vessels, propelling the lymph fluid through the vessels and towards the lymph nodes. This movement, along with the one-way valves in the lymph vessels, allows for the efficient transport of lymph throughout the body.

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  • 4. 

    Which of the following are functions of lymphoid tissue?

    • House and provide a proliferation site for lymphocytes

    • House and provide a proliferation site for neutrophils

    • Furnish an ideal surveillance vantage point for lymphocytes and macrophages

    • A and C

    Correct Answer
    A. A and C
    Explanation
    Lymphoid tissue serves as a house and provides a proliferation site for lymphocytes. It also furnishes an ideal surveillance vantage point for lymphocytes and macrophages. Therefore, both options A and C are correct as they accurately describe the functions of lymphoid tissue.

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  • 5. 

    Which of the following is not a function of the lymphatic system?

    • Draining excess interstitial fluid

    • Transporting dietary fats

    • Transporting respiratory gases

    • Carrying out immune responses

    Correct Answer
    A. Transporting respiratory gases
    Explanation
    The lymphatic system is responsible for draining excess interstitial fluid, transporting dietary fats, and carrying out immune responses. However, it is not involved in transporting respiratory gases. The respiratory system, specifically the lungs, is responsible for the exchange of oxygen and carbon dioxide between the body and the environment.

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  • 6. 

    Lymph leaves a lymph node via _______________.

    • The sub scapular signs

    • The cortical sinus

    • Efferent lymphatic vessels

    • Afferent lymphatic vessels

    Correct Answer
    A. Efferent lymphatic vessels
    Explanation
    Lymph leaves a lymph node via efferent lymphatic vessels. These vessels are responsible for carrying lymph away from the lymph node and towards the next lymph node or back into the bloodstream. Afferent lymphatic vessels, on the other hand, bring lymph into the lymph node. The subscapular sinus and cortical sinus are spaces within the lymph node where lymph circulates. However, it is the efferent lymphatic vessels that actually allow lymph to exit the lymph node.

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  • 7. 

    Which of the following would not be classified as a lymphatic structure?

    • Pancreas

    • Tonsils

    • Spleen

    • Peyer's patches of the intestine

    Correct Answer
    A. Pancreas
    Explanation
    The pancreas would not be classified as a lymphatic structure because it is not directly involved in the immune system or the production of lymphocytes. The pancreas is primarily responsible for producing digestive enzymes and regulating blood sugar levels by producing insulin and glucagon. In contrast, the tonsils, spleen, and Peyer's patches of the intestine are all lymphatic structures that play important roles in immune function and the production of lymphocytes.

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  • 8. 

    The distal portion of the small intestine contains clumps of lymph follicles called ____________________________.

    • Peyer's patches

    • Rugae

    • Islets of Langerhans

    • Villi

    Correct Answer
    A. Peyer's patches
    Explanation
    The distal portion of the small intestine contains clumps of lymph follicles called Peyer's patches. Peyer's patches are important for the immune system as they help in detecting and fighting against harmful bacteria and other pathogens in the intestines. They are composed of lymphoid tissue and contain specialized immune cells called lymphocytes. Peyer's patches play a crucial role in the body's defense against infections in the gastrointestinal tract.

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  • 9. 

    Both lymph and venous blood flow are heavily dependent on ___________________________.

    • The pumping action of the heart

    • Two-way valves

    • Contraction of the vessels themselves

    • Skeletal muscle contractions and differences in thoracic pressures due to respiratory movement

    Correct Answer
    A. Skeletal muscle contractions and differences in thoracic pressures due to respiratory movement
    Explanation
    Lymph and venous blood flow are heavily dependent on skeletal muscle contractions and differences in thoracic pressures due to respiratory movement. Skeletal muscle contractions help to squeeze the lymphatic vessels and veins, aiding in the movement of lymph and blood. Additionally, the changes in thoracic pressures during breathing create pressure gradients that assist in the flow of lymph and blood towards the heart. These mechanisms work together to ensure the proper circulation of lymph and venous blood throughout the body.

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  • 10. 

    Small organs associated with lymphatic vessels are termed _____________________.

    • Lymph follicles

    • Cisterna chyli

    • Axillary nodes

    • Lymph nodes

    Correct Answer
    A. Lymph nodes
    Explanation
    Lymph nodes are small organs associated with lymphatic vessels. They play a crucial role in the immune system by filtering lymph fluid and trapping harmful substances such as bacteria and viruses. Lymph nodes contain immune cells that help to fight infections and prevent the spread of diseases throughout the body. Therefore, lymph nodes are the correct answer to this question.

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  • 11. 

    Peyer's patches are found in the _____________________.

    • Ileum of the small intestine

    • Jejunum of the small intestine

    • Duodenum of the small intestine

    • Large intestine

    Correct Answer
    A. Ileum of the small intestine
    Explanation
    Peyer's patches are lymphoid tissue found in the ileum of the small intestine. They are part of the immune system and play a role in monitoring and protecting against pathogens that enter the digestive tract. Peyer's patches contain specialized immune cells, such as lymphocytes, that help in the recognition and elimination of harmful microorganisms.

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  • 12. 

    The thymus is most active during _________________________.

    • Childhood

    • Old age

    • Middle age

    • Fetal development

    Correct Answer
    A. Childhood
    Explanation
    The thymus is most active during childhood because it plays a crucial role in the development and maturation of T cells, which are important for the immune system. During childhood, the thymus is at its largest size and produces a large number of T cells, which are responsible for recognizing and attacking foreign substances in the body. As we age, the thymus gradually decreases in size and activity, leading to a decline in T cell production. Therefore, childhood is the period when the thymus is most active.

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  • 13. 

    Large clusters of lymph nodes occur in all of the following locations except the

    • Lower extremities

    • Inguinal region

    • Cervical region

    • Axillary region

    Correct Answer
    A. Lower extremities
    Explanation
    Large clusters of lymph nodes occur in all of the listed locations except the lower extremities. Lymph nodes are small, bean-shaped structures that are part of the lymphatic system, which helps filter and fight off infections in the body. Lymph nodes are found in various regions of the body, including the inguinal region (groin area), cervical region (neck area), and axillary region (armpit area). However, lymph nodes are not typically found in large clusters in the lower extremities (legs), making this the correct answer.

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  • 14. 

    What effect does age have on the size of the thymus?

    • The thymus is not affected by age

    • The thymus initially increases in size and then decreases in size from adolescence through old age

    • The size of the thymus increases continuously from birth to death

    • The size of the thymus decreases continuously from birth to death

    Correct Answer
    A. The thymus initially increases in size and then decreases in size from adolescence through old age
    Explanation
    As individuals age, the size of the thymus initially increases and then decreases. This is because the thymus is most active during childhood and adolescence, producing T cells that are crucial for the immune system. However, as individuals reach adulthood, the thymus gradually starts to shrink and lose its functionality. This process, known as thymic involution, is a natural part of aging and is responsible for the decline in immune function observed in older individuals. Therefore, the correct answer is that the thymus initially increases in size and then decreases in size from adolescence through old age.

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  • 15. 

    The lymphatic capillaries are ___________________________.

    • Less permeable than blood capillaries

    • As permeable as blood capillaries

    • More permeable than blood capillaries

    • Completely impermeable

    Correct Answer
    A. More permeable than blood capillaries
    Explanation
    The lymphatic capillaries are more permeable than blood capillaries. This is because the lymphatic system is responsible for collecting excess fluid, waste products, and pathogens from the tissues and returning them to the bloodstream. The high permeability of lymphatic capillaries allows for the easy entry of these substances into the lymphatic vessels. In contrast, blood capillaries have tighter junctions between their endothelial cells, limiting the passage of large molecules and cells. This difference in permeability allows the lymphatic system to play a crucial role in immune response and fluid balance in the body.

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  • 16. 

    Which cells become immunocompetent due to thymic hormones?

    • Lymphocytes

    • Monocytes

    • Marcophages

    • Basophils

    Correct Answer
    A. Lymphocytes
    Explanation
    Thymic hormones are responsible for the development and maturation of T lymphocytes (a type of lymphocyte) in the thymus gland. These hormones play a crucial role in the process of making these lymphocytes immunocompetent, meaning they gain the ability to recognize and respond to specific antigens. Therefore, the correct answer is lymphocytes.

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  • 17. 

    When the lymphatic structures are blocked due to tumors, the result is _______________________.

    • Increased pressure in the lymphatics proximal to the blockage

    • Abnormally high lymph drainage from the distal region

    • Shrinkage of tissues distal to the blockage due to inadequate delivery of lymph

    • Serve localized edema distal to the blockage

    Correct Answer
    A. Serve localized edema distal to the blockage
    Explanation
    When the lymphatic structures are blocked due to tumors, the result is severe localized edema distal to the blockage. This occurs because the blockage prevents the normal flow of lymph, leading to a buildup of fluid in the affected area. As a result, the tissues distal to the blockage become swollen and edematous. The severity of the edema can vary depending on the extent of the blockage and the ability of the lymphatic system to compensate.

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  • 18. 

    Which of the following is not a normal component of lymph?

    • Ions

    • Red blood cells

    • Water

    • Plasma proteins

    Correct Answer
    A. Red blood cells
    Explanation
    Red blood cells are not a normal component of lymph. Lymph is a fluid that circulates throughout the lymphatic system, carrying lymphocytes and other immune cells. It is derived from interstitial fluid and contains water, ions, and plasma proteins. Red blood cells, on the other hand, are part of the circulatory system and are responsible for carrying oxygen to tissues. They are not typically found in lymph.

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  • 19. 

    The tonsils located at the base of the tongue are the _____________________.

    • Peyer's tonsils

    • Lingual tonsils

    • Palatine tonsils

    • Pharyngeal tonsils

    Correct Answer
    A. Lingual tonsils
    Explanation
    The tonsils located at the base of the tongue are known as lingual tonsils. These tonsils are a part of the lymphatic system and help to protect the body against infections. They are located on the posterior part of the tongue and are made up of lymphoid tissue. Lingual tonsils play a role in the immune response by producing antibodies and trapping bacteria and other pathogens that enter the body through the mouth and throat.

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  • 20. 

    Select the correct statement about lymphoid tissue.

    • Lymphoid tissue is predominantly reticular connective tissue

    • Lymphoid macrophages secrete antibodies into the blood

    • Once a lymphocyte enters the lymphoid tissue, it resides there permanently

    • T lymphocytes act by ingesting foreign substances

    Correct Answer
    A. Lymphoid tissue is predominantly reticular connective tissue
    Explanation
    Lymphoid tissue is predominantly reticular connective tissue because it contains a network of reticular fibers that support and provide structure to the tissue. This type of tissue is found in various organs of the lymphatic system, such as lymph nodes, tonsils, and spleen. The reticular fibers create a framework that allows immune cells, such as lymphocytes and macrophages, to move freely within the tissue and interact with foreign substances. This arrangement facilitates the immune response and helps in the filtration and removal of pathogens from the body.

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  • 21. 

    Digestive tract associated lymphatic tissue includes all of the following except _______________________

    • Islets of Langerhans

    • Peyer's patches

    • Palatine tonsils

    • Lingual tonsils

    Correct Answer
    A. Islets of Langerhans
    Explanation
    The digestive tract associated lymphatic tissue is a part of the immune system that helps protect the body from pathogens in the digestive tract. It includes structures such as Peyer's patches, palatine tonsils, and lingual tonsils. However, the islets of Langerhans are not part of the lymphatic tissue. The islets of Langerhans are clusters of cells in the pancreas that produce and release hormones such as insulin and glucagon, which regulate blood sugar levels.

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  • 22. 

    Which of the following is not a function of lymph nodes?

    • Produce lymph fluid and cerebro-spinal fluid

    • Serve as antigen surveillance areas

    • Act as lymph filters and activate the immune system

    • Produce lymphoid cells and granular WBCs

    Correct Answer
    A. Produce lymph fluid and cerebro-spinal fluid
  • 23. 

    Functions of the spleen include all of those below except ______________________.

    • Removal of old or defective blood cells from the blood

    • Forming crypts that trap bacteria

    • Storage of iron

    • Storage of blood platelets

    Correct Answer
    A. Forming crypts that trap bacteria
    Explanation
    The spleen performs several important functions in the body, including the removal of old or defective blood cells from the blood, storage of iron, and storage of blood platelets. However, it does not form crypts that trap bacteria. This function is typically associated with other organs, such as the tonsils or lymph nodes, which have specialized structures to help trap and filter out bacteria and other pathogens.

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  • 24. 

    Select the correct statement about lymphocytes.

    • The two main types are T cells and macrophages

    • T cells are the only form of lymphocyte found in lymphoid tissue

    • T cells are the precursors of B cells

    • B cells produce plasma cells, which secrete antibodies into the blood

    Correct Answer
    A. B cells produce plasma cells, which secrete antibodies into the blood
    Explanation
    B cells are a type of lymphocyte that play a crucial role in the immune response. They are responsible for producing plasma cells, which are specialized cells that secrete antibodies into the blood. Antibodies are proteins that help to neutralize pathogens and foreign substances in the body, thus aiding in the defense against infections. This statement accurately describes the function of B cells and their role in producing plasma cells and antibodies.

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  • 25. 

    The thymus is the only lymphoid organ that does not

    • Have a cortex and medulla

    • Produce hormones

    • Have lymphocytes

    • Directly fight antigens

    Correct Answer
    A. Directly fight antigens
    Explanation
    The thymus is the only lymphoid organ that does not directly fight antigens. While the thymus plays a crucial role in the development and maturation of T lymphocytes, it does not directly engage in the fight against antigens. Instead, it serves as a site for T cell maturation, where immature T cells differentiate into functional T cells capable of recognizing and attacking antigens. Once matured, these T cells then migrate to other lymphoid organs, such as the lymph nodes and spleen, where they directly engage in immune responses against antigens.

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  • 26. 

    A sentinel node is ____________________________.

    • The first node to receive lymph from an area suspected to be cancerous

    • The first node at the junction of all the lumbar trunks

    • A small node in the spleen

    • A lymph node found in the intestinal lamina propria

    Correct Answer
    A. The first node to receive lymph from an area suspected to be cancerous
    Explanation
    A sentinel node is the first node to receive lymph from an area suspected to be cancerous. This node plays a crucial role in determining whether cancer has spread beyond its original site. By examining the sentinel node, doctors can assess if cancer cells have migrated to the lymphatic system and potentially to other parts of the body. Identifying the sentinel node helps guide further diagnostic and treatment decisions for cancer patients.

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  • 27. 

    What is a bubo?

    • An infected Peyer's patch

    • A lobe of the spleen

    • A wall in a lymph node

    • An infected lymph node

    Correct Answer
    A. An infected lymph node
    Explanation
    A bubo refers to an infected lymph node. Lymph nodes are small, bean-shaped structures that play a crucial role in the immune system by filtering lymph fluid and trapping harmful substances like bacteria and viruses. When a lymph node becomes infected, it can swell, become tender, and form a painful lump called a bubo. This is commonly seen in conditions like bubonic plague or certain sexually transmitted infections. Therefore, the correct answer is "an infected lymph node."

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  • 28. 

    Antibodies that act against a particular foreign substances are released by __________________.

    • Plasma cells

    • T lymphocytes

    • Lymph nodes

    • Medullary cords

    Correct Answer
    A. Plasma cells
    Explanation
    Plasma cells are responsible for releasing antibodies that act against foreign substances. These specialized white blood cells are derived from B cells and are part of the immune response. When a foreign substance, such as a pathogen, enters the body, B cells are activated and differentiate into plasma cells. These plasma cells then produce and release antibodies that specifically target and neutralize the foreign substance, helping to eliminate the threat and protect the body from infection. Therefore, plasma cells are the correct answer for this question.

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  • 29. 

    Which of the following is not a method that maintains lymph flow?

    • Breathing

    • Valves in lymph vessel walls

    • Skeletal muscle contraction

    • Smooth muscle contraction

    Correct Answer
    A. Smooth muscle contraction
    Explanation
    Smooth muscle contraction is not a method that maintains lymph flow. Lymph flow is primarily maintained by other mechanisms such as breathing, valves in lymph vessel walls, and skeletal muscle contraction. Smooth muscle contraction refers to the contraction of the smooth muscles found in the walls of various organs, but it is not directly involved in maintaining lymph flow.

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  • 30. 

    Which of the following is not a mucosa-associated lymphatic tissue?

    • Peyer's patch

    • Thymus

    • Tonsil

    • Appendix

    Correct Answer
    A. Thymus
    Explanation
    The thymus is not a mucosa-associated lymphatic tissue. Mucosa-associated lymphatic tissues are found in areas of the body that are exposed to the external environment, such as the digestive and respiratory tracts. They play a role in immune defense by producing specialized immune cells. The thymus, on the other hand, is located in the chest and is responsible for the development and maturation of T cells, a type of white blood cell involved in immune response. While it is an important organ of the immune system, it is not classified as a mucosa-associated lymphatic tissue.

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  • 31. 

    Lymph capillaries are absent in all but which of the following?

    • Bones and teeth

    • Digestive organs

    • CNS

    • Bone marrow

    Correct Answer
    A. Digestive organs
    Explanation
    Lymph capillaries are present in most tissues and organs of the body, except for the digestive organs. Lymph capillaries are responsible for collecting excess interstitial fluid and returning it to the bloodstream. They are found in the connective tissues of various organs, including the skin, muscles, and even bones and teeth. However, they are not present in the digestive organs such as the stomach, intestines, liver, and pancreas. This is because the digestive organs have their own specialized lymphatic system called the lacteals, which absorb fats and fat-soluble vitamins from the intestines.

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  • May 20, 2025
    Quiz Edited by
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  • Feb 07, 2018
    Quiz Created by
    Caitlynallison

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