21.4 Secondary Lymphoid Structures
59 Questions
3 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the main function of lymph nodes?

  • Absorbing nutrients
  • Filtering lymph and removing unwanted substances (correct)
  • Production of lymphocytes
  • Transporting lymphatic vessels

    • How are lymphoid organs differentiated from other lymphoid structures?

  • Presence of a complete capsule composed of dense irregular connective tissue (correct)
  • Smaller size compared to other structures
  • Lack of reticular connective tissue matrix
  • Absence of lymphocytes

    • Where are lymph nodes typically located in the body?

  • Along the pathways of lymphatic vessels (correct)
  • Inside the heart chambers
  • Under the skin
  • Within skeletal muscles

    • Which secondary lymphoid structure includes a complete capsule?

    <p>Spleen</p> Signup and view all the answers

    What is the approximate range of sizes for lymph nodes?

    <p>0.1 to 2.5 centimeters</p> Signup and view all the answers

    Apart from lymph nodes, which structure also has an incomplete or absent capsule?

    <p>Tonsils</p> Signup and view all the answers

    What is the purpose of the anatomic arrangement where the collective diameter of afferent lymphatic vessels is larger than the efferent lymphatic vessel?

    <p>To create a higher fluid pressure in the lymph node sinuses, forcing lymph through the node</p> Signup and view all the answers

    What is the primary function of macrophages residing in the lymph nodes?

    <p>To remove foreign debris from the lymph by phagocytosis</p> Signup and view all the answers

    How is lymph repeatedly screened for unwanted substances?

    <p>By passing through multiple lymph nodes in a cluster</p> Signup and view all the answers

    What type of malignant neoplasm is a lymphoma?

    <p>A tumor that develops within lymphoid structures</p> Signup and view all the answers

    Which type of lymphocyte is more commonly involved in the development of lymphoma?

    <p>B-lymphocytes</p> Signup and view all the answers

    Which of the following is NOT a common symptom associated with lymphoma?

    <p>Increased appetite</p> Signup and view all the answers

    What is the characteristic cell found in Hodgkin lymphoma?

    <p>Reed-Sternberg cell</p> Signup and view all the answers

    Which age groups are most commonly affected by Hodgkin lymphoma?

    <p>Young adults (16-35) and elderly (over 60)</p> Signup and view all the answers

    How does Hodgkin lymphoma typically progress?

    <p>It arises in a lymph node and spreads to other nearby lymph nodes</p> Signup and view all the answers

    What is the primary treatment for early-stage Hodgkin lymphoma?

    <p>Excision of the tumor, followed by radiation, chemotherapy, or both</p> Signup and view all the answers

    How do non-Hodgkin lymphomas compare to Hodgkin lymphomas in terms of prevalence and aggressiveness?

    <p>Non-Hodgkin lymphomas are more common, but some are aggressive while others are slow-growing</p> Signup and view all the answers

    What is the primary function of dendritic cells in the context of the immune system?

    <p>They migrate from the skin and mucosal membranes to lymph nodes after phagocytosing foreign substances</p> Signup and view all the answers

    Which of the following is NOT a symptom of tonsillitis?

    <p>Nausea</p> Signup and view all the answers

    What is the medical term for the surgical removal of the tonsils?

    <p>Tonsillectomy</p> Signup and view all the answers

    According to the medical guidelines mentioned in the text, when should a tonsillectomy be considered?

    <p>If the person has had 7 throat infections in 1 year, 5 infections per year for 2 years, or 3 infections per year for 3 years</p> Signup and view all the answers

    What does the research mentioned in the text indicate about tonsillectomy?

    <p>It does not significantly affect the body's response to new infections</p> Signup and view all the answers

    What is MALT?

    <p>Mucosa-associated lymphoid tissue</p> Signup and view all the answers

    Where are Peyer patches located?

    <p>In the small intestine, primarily in the ileum</p> Signup and view all the answers

    Which of the following statements about the location of the spleen is correct?

    <p>The spleen is located in the left upper quadrant of the abdomen, inferior to the diaphragm and adjacent to ribs 9-11.</p> Signup and view all the answers

    Which of the following statements about the size and shape of the spleen is correct?

    <p>The spleen is typically about 12 centimeters long and 7 centimeters wide, with a convex posterolateral aspect and a concave anteromedial border.</p> Signup and view all the answers

    Where is the hilum of the spleen located?

    <p>The hilum is located on the concave anteromedial border (visceral surface) of the spleen.</p> Signup and view all the answers

    Which blood vessel delivers blood to the spleen?

    <p>The splenic artery</p> Signup and view all the answers

    What surrounds the spleen and extends into the organ?

    <p>A fibrous capsule and trabeculae</p> Signup and view all the answers

    Which of the following statements about the microscopic structure of the spleen is correct?

    <p>The spleen has a red pulp and a white pulp.</p> Signup and view all the answers

    What is the primary role of the lymphatic system in assisting the cardiovascular system?

    <p>Returning excess fluid from interstitial space to the blood</p> Signup and view all the answers

    What function does the lymphatic system serve in aiding the immune system?

    <p>Participating in defending the body against harmful substances</p> Signup and view all the answers

    Where is MALT primarily found in the body?

    <p>Mucosal linings of gastrointestinal, respiratory, urinary, and reproductive tracts</p> Signup and view all the answers

    How does the lymphatic system contribute to maintaining blood pressure?

    <p>By returning excess fluid from tissues to the blood</p> Signup and view all the answers

    In what way does the lymphatic system support the immune system?

    <p>By participating in defending the body against harmful substances</p> Signup and view all the answers

    What distinguishes Hodgkin lymphoma from non-Hodgkin lymphoma?

    <p>The presence of Reed-Sternberg cells</p> Signup and view all the answers

    What is the primary function of dendritic cells in the immune system?

    <p>Presentation of antigens to T cells</p> Signup and view all the answers

    How does the aggressiveness of non-Hodgkin lymphomas typically compare to Hodgkin lymphomas?

    <p>The aggressiveness depends on the specific subtype</p> Signup and view all the answers

    Which age groups are most commonly affected by Hodgkin lymphoma?

    <p>Young adults (ages 16-35) and people over 60</p> Signup and view all the answers

    What is the typical treatment approach for early-stage Hodgkin lymphoma?

    <p>Excision of the tumor, followed by radiation, chemotherapy, or both</p> Signup and view all the answers

    Where do dendritic cells reside before migrating to lymph nodes?

    <p>Epithelial and connective tissue of the skin and mucosal membranes</p> Signup and view all the answers

    Based on the anatomic arrangement described, what is the purpose of having a larger collective diameter for the afferent lymphatic vessels compared to the efferent lymphatic vessel?

    <p>It increases the fluid pressure in the lymph node sinuses, facilitating lymph flow through the node.</p> Signup and view all the answers

    What is the primary role of macrophages residing in the lymph nodes?

    <p>To remove foreign debris from the lymph by phagocytosis.</p> Signup and view all the answers

    What is the primary advantage of having lymph nodes arranged in clusters?

    <p>It enables repeated screening of lymph for unwanted substances.</p> Signup and view all the answers

    According to the information provided, which type of lymphocyte is more commonly involved in the development of lymphoma?

    <p>B-lymphocytes</p> Signup and view all the answers

    Which of the following is a common symptom associated with lymphoma, as mentioned in the text?

    <p>Night sweats</p> Signup and view all the answers

    What is the primary reason for the continuous monitoring of lymph as it passes through lymph nodes?

    <p>To detect and remove foreign or pathogenic substances.</p> Signup and view all the answers

    What is the primary function of NK cells?

    <p>To recognize and eliminate abnormal or infected cells</p> Signup and view all the answers

    What is the primary function of the germinal centers within lymph nodes?

    <p>To facilitate the proliferation and maturation of B cells</p> Signup and view all the answers

    What is the significance of swollen lymph nodes during an infection?

    <p>It is a sign of lymphocyte proliferation to fight the infection</p> Signup and view all the answers

    What is the primary function of the spleen?

    <p>To filter blood and remove pathogens</p> Signup and view all the answers

    What is the difference between white pulp and red pulp in the spleen?

    <p>White pulp contains lymphocytes, while red pulp filters blood</p> Signup and view all the answers

    What is the role of macrophages in lymph nodes?

    <p>To monitor and remove foreign substances from lymph</p> Signup and view all the answers

    What is the primary reason for performing a splenectomy (removal of the spleen)?

    <p>To treat a ruptured spleen resulting from abdominal injury</p> Signup and view all the answers

    After a splenectomy, what is recommended to reduce the risk of serious infections?

    <p>Receiving vaccines against flu and pneumonia, and taking antibiotics</p> Signup and view all the answers

    What function does the spleen perform during fetal development through the fifth month?

    <p>Produces red blood cells and other formed elements</p> Signup and view all the answers

    What is the process called when the spleen reactivates its fetal function of producing formed elements under certain conditions?

    <p>Extramedullary hematopoiesis</p> Signup and view all the answers

    Which part of the spleen is responsible for filtering blood and removing damaged red blood cells?

    <p>Red pulp</p> Signup and view all the answers

    Which part of the spleen is primarily involved in the immune response and contains lymphocytes?

    <p>White pulp</p> Signup and view all the answers

    More Like This

    TOB Module Practical Session 5: Lymphoid System
    16 questions

    TOB Module Practical Session 5: Lymphoid System

    UOS Gecko avatar
    UOS Gecko
    Lymphoid
    30 questions

    Lymphoid

    GenuineNovaculite7213 avatar
    GenuineNovaculite7213
    21.2 Overview Of Lymphoid Structures
    24 questions

    21.2 Overview Of Lymphoid Structures

    IndividualizedCactus avatar
    IndividualizedCactus
    Histology of Immune System: Spleen Structure and Function
    10 questions

    Histology of Immune System: Spleen Structure and Function

    PleasantMercury avatar
    PleasantMercury
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser