Reticular cell
Reticular cells are a type of cell found in the lymphatic system and connective tissue. They are named for their net-like appearance, which is due to the presence of long, branching processes on their surface. These cells play a crucial role in the immune response, providing a framework for the lymphatic tissue and producing reticular fibers that support other cells in the lymphatic system.
Etymology[edit | edit source]
The term "reticular" comes from the Latin word "reticulum", which means "little net". This is a reference to the net-like structure of these cells.
Structure and Function[edit | edit source]
Reticular cells are characterized by their long, branching processes, which form a network that supports other cells in the lymphatic system. They are found in all lymphoid organs, including the lymph nodes, spleen, and thymus.
Reticular cells produce reticular fibers, which are composed of type III collagen. These fibers form a mesh-like network that provides a supportive framework for the lymphatic tissue. This network also serves as a filter, trapping foreign particles and preventing them from spreading throughout the body.
In addition to their structural role, reticular cells are involved in the immune response. They present antigens to lymphocytes, stimulating these cells to mount an immune response against foreign substances.
Related Terms[edit | edit source]
- Lymphatic system: The network of tissues and organs that help rid the body of toxins, waste and other unwanted materials.
- Lymph nodes: Small, bean-shaped structures that produce and store cells that fight infection and disease.
- Spleen: The largest organ in the lymphatic system, it is responsible for filtering and storing blood and producing white blood cells.
- Thymus: A lymphoid organ where T cells mature.
- Collagen: The most abundant protein in the body, it is responsible for several biological functions including providing structure and strength to connective tissues.
- Lymphocytes: A type of white blood cell that is part of the immune system.
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