Podcast
Questions and Answers
Lymphatic nodules with germinal centers constitutes the ______ pulp
Lymphatic nodules with germinal centers constitutes the ______ pulp
white
The Central artery passes through ______ nodules
The Central artery passes through ______ nodules
lymphatic
The ______ or splenic pulp contains pulp arteries, Venous sinuses and Splenic cords (Cords of Billroth)
The ______ or splenic pulp contains pulp arteries, Venous sinuses and Splenic cords (Cords of Billroth)
Red
The ______ pulp contains pulp arteries, Venous sinuses and Splenic cords (Cords of Billroth)
The ______ pulp contains pulp arteries, Venous sinuses and Splenic cords (Cords of Billroth)
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______ cords (Cords of Billroth) are found in the red pulp
______ cords (Cords of Billroth) are found in the red pulp
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The organ being described is the ______
The organ being described is the ______
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Study Notes
Primary Lymphoid Organs
- Ileum and appendix are primary lymphoid organs
Secondary (Effector) Lymphoid Organs/Tissue
- Spleen and lymph nodes are secondary lymphoid organs
- Mucosal associated lymphoid tissue (MALT) is a type of secondary lymphoid tissue
- MALT is composed of:
- Diffused population of cells mainly consisting of T lymphocytes, macrophages, antigen-presenting cells (APC), reticular cells, and reticular fibers
- Ground substance produced by reticular cells
Lymphoid Nodules
- Lymphatic nodules are found in MALT
- Tonsils are an example of lymphoid nodules
- Types of tonsils include:
- Palatine tonsils
- Pharyngeal tonsil
- Tonsils are covered by stratified ciliated columnar epithelium
- No crypts are present in tonsils
Thymus
- Located in the mediastinum
- Has a CT capsule that penetrates the parenchyma and divides it into incomplete lobules
- Each lobule contains:
Spleen
- The largest lymphoid organ in the body
- The only lymphoid organ interposed in blood circulation
- Covered by a capsule that extends to form trabeculae
- Trabeculae contain trabecular arteries and veins
- Lymphatic nodules with germinal centers constitute the white pulp
- Central artery passes through lymphatic nodules
- Red or splenic pulp contains:
- Pulp arteries
- Venous sinuses
- Splenic cords (Cords of Billroth)
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Description
Identify and understand the primary and secondary lymphoid organs and tissues, including their composition and functions.
