Lymphoid Organs: Overview (Nursing)

by Jasmine Clark, PhD

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    00:01 Our lymphoid organs are grouped into two functional groups as well.

    00:07 We have the primary lymphoid organs, which are going to be areas where our T and our B cells are going to mature.

    00:14 These include the red bone marrow, which is found in our flat bones and in the epiphysis of our long bones, and then the thymus.

    00:26 The T and B cells originate in the bone marrow, however, only B cells are going to mature there.

    00:33 T cells mature in the thymus.

    00:38 The secondary lymphoid organs are going to be areas where our mature lymphocytes are going to first encounter their antigen and become activated.

    00:48 This is going to be in places like the nodes, the spleen, the mucosa-associated lymphoid tissue or MALT, and also in that diffuse lymphoid tissue found throughout the body.

    01:03 So let's take a closer look at each of the lymphoid organs.

    01:07 So of the lymphoid organs, we have the spleen, the lymph nodes, and the thymus.

    01:15 Also, we have the tonsils, the Peyre's patch, and the appendix.

    01:21 It's important to note that while we are calling the tonsils, Peyre's patch; and appendix "organs" they are not actually considered organs and instead are considered lymphoid follicles.

    01:33 Of these, the thymus is going to be a primary lymphoid organ, while the tonsils, spleen, peyre's patch, appendix, and lymph nodes are considered secondary.

    About the Lecture

    The lecture Lymphoid Organs: Overview (Nursing) by Jasmine Clark, PhD is from the course Lymphatic System – Physiology (Nursing).

    Included Quiz Questions

    1. Primary lymphoid organs
    2. Essential lymphoid organs
    3. Secondary lymphoid organs
    4. Inferior lymphoid organs
    1. Secondary lymphoid organs
    2. Essential lymphoid organs
    3. Inferior lymphoid organs
    4. Primary lymphoid organs

    Author of lecture Lymphoid Organs: Overview (Nursing)

     Jasmine Clark, PhD

    Jasmine Clark, PhD

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