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Questions and Answers
What is the primary function of lymph nodes in the lymphatic system?
What is the primary function of lymph nodes in the lymphatic system?
Which type of cells proliferate within lymph nodes?
Which type of cells proliferate within lymph nodes?
Where is the spleen located in the human body?
Where is the spleen located in the human body?
What type of lymphatic tissue is primarily found in the spleen?
What type of lymphatic tissue is primarily found in the spleen?
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What is the primary composition of lymph nodes?
What is the primary composition of lymph nodes?
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What happens when there is incomplete phagocytosis of bacteria in lymph nodes?
What happens when there is incomplete phagocytosis of bacteria in lymph nodes?
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Which structure is responsible for breaking down organic material in lymph nodes?
Which structure is responsible for breaking down organic material in lymph nodes?
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What is the approximate weight of a healthy spleen?
What is the approximate weight of a healthy spleen?
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Study Notes
Lymph Node Structure and Function
- Lymph nodes filter lymph, removing foreign material like bacteria.
- Macrophages and antibodies destroy pathogens in lymph nodes.
- Some inorganic particles may remain inside macrophages.
- Lymph nodes progressively filter lymph, removing foreign matter and cell debris.
- Lymph node enlargement sometimes indicates inflammation, like lymphadenopathy.
Lymph Node Location
- Submandibular nodes are located near the jaw.
- Deep cervical nodes are deeper in the neck.
- Superficial cervical nodes are on the surface of the neck.
- Occipital nodes are at the back of the head.
Lymph Node Cellular Components
- Lymph node tissue contains reticular cells, white blood cells, and macrophages.
- Scanning electron micrographs show this cellular composition.
- Macrophages and lymphocytes have been seen in tissues.
Spleen Structure and Location
- The spleen is the largest lymphatic organ.
- Located in the left hypochondriac region of the abdomen, between the stomach and diaphragm.
- Approximately 12 cm long, 7 cm wide, and 2.5 cm thick, weighing about 200 g.
- Enclosed in a fibroelastic capsule, with trabeculae.
- The splenic pulp contains lymphocytes and macrophages.
Spleen Function
- Contains lymphatic and reticular tissue.
- Removes damaged red blood cells from circulation.
- Filters and removes foreign matter from blood.
Organs Associated with the Spleen
- Lies superiorly/posteriorly to the left colic flexure.
- Lies inferiorly to the fundus of the stomach.
- It's anteriorly related to the pancreas and the left kidney
- The 9th, 10th and 11th ribs and the intercostal muscles are separated by the diaphragm.
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Description
Test your knowledge on the structure and function of lymph nodes and the spleen. This quiz covers various aspects including cellular components, locations, and the role of lymph nodes in filtering lymph. Understand how the lymphatic system assists the immune response.
