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BIO 431 Lymphatic System Exam Questions and Answers
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BIO 431 Lymphatic System Exam Questions and Answers
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BIO 431 Lymphatic System ExamQuestions and Answers
Lymph Nodes - Answer--Encapsulated bean-shaped organs consisting of masses of B
cells and T cells.
- Major areas are:
-Inguinal
-Axillary
-Cervical
-Popliteal
Fibrous Capsule - Answer-- Found on the outside surface of a lymph node.
- Comprised of dense connective tissue that
extends into the lymph node.
Trabeculae - Answer--The pillars inside the lymph node.
-It divides the node into compartments, provides
support, and provides a route for blood vessels into the interior of a node.
Cortical Nodules - Answer-Composed of packed lymphocytes that surround a less
dense area called a germinal center.
Medullary cords - Answer-extend inward from cortex and contain B cells, T cells, and
plasma cells
Germinal Centers - Answer-Nodes and nodules have sites for rapidly dividing B cells
and plasma cells
Afferent Lymphatic Vessels - Answer-Entrance point where lymph enters the lymph
node.
Efferent Lymphatic Vessels - Answer-Exit point where the lymph leaves the lymph
nodes
Sinuses in a Lymph Node - Answer-A series of irregular channels that contain
branching reticular fibers, lymphocytes, and macrophages.
- Includes:
- Subcapsular Sinus (found close to the capsule)
- Trabecular Sinus (found along the trabeculae)
- Medullary Sinus (central area of node)
Lymph Ducts - Answer-collecting channels that carry lymph from the lymph nodes to the
veins
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