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Questions and Answers
What is one function of the lymph nodes?
What is one function of the lymph nodes?
- Production of hormones
- Filter out bacteria and dead tissue (correct)
- Store nutrients
- Regulate blood pressure
Which type of lymphocyte multiplies within the lymph nodes?
Which type of lymphocyte multiplies within the lymph nodes?
- Eosinophils
- Activated T and B-lymphocytes (correct)
- Basophils
- Platelets
Where is the spleen primarily located?
Where is the spleen primarily located?
- Behind the heart
- Above the right kidney
- Near the large intestine's right flexure
- In the left hypochondriac region of the abdomen (correct)
What is the role of macrophages in the lymph nodes?
What is the role of macrophages in the lymph nodes?
What is the approximate weight of a typical spleen?
What is the approximate weight of a typical spleen?
What can occur if there is incomplete phagocytosis of bacteria in lymph nodes?
What can occur if there is incomplete phagocytosis of bacteria in lymph nodes?
What shape is the spleen described as?
What shape is the spleen described as?
Which structure supports the spleen and forms trabeculae?
Which structure supports the spleen and forms trabeculae?
Flashcards
What is the function of lymph nodes?
What is the function of lymph nodes?
Lymph nodes filter lymph fluid, removing harmful substances like bacteria, dead cells, and foreign particles.
What are macrophages and what is their role in lymph nodes?
What are macrophages and what is their role in lymph nodes?
Macrophages are specialized cells that engulf and destroy foreign material in lymph nodes through a process called phagocytosis.
What happens if a lymph node fails to clear harmful substances?
What happens if a lymph node fails to clear harmful substances?
If lymph nodes fail to completely destroy foreign material, inflammation and swelling (lymphadenopathy) can occur.
What type of cells proliferate within lymph nodes?
What type of cells proliferate within lymph nodes?
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What is the spleen and where is it located?
What is the spleen and where is it located?
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What are the key functions of the spleen?
What are the key functions of the spleen?
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Describe the structural components of the spleen.
Describe the structural components of the spleen.
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Describe the spleen pulp and its function.
Describe the spleen pulp and its function.
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Study Notes
The Lymphatic System
- The lymphatic system includes lymph nodes, which contain macrophages and lymphocytes.
- Lymph nodes filter lymph, a fluid containing bacteria, dead cells, and foreign material.
- Macrophages destroy foreign material in the lymph nodes.
- Lymphocytes, which are white blood cells, multiply in the lymph nodes.
- Antibodies produced by lymphocytes are released into the lymph and blood.
- Lymph nodes can become inflamed due to infections (lymphadenopathy).
Lymph Nodes
- Lymph nodes are located throughout the body, including the face and neck.
- Submandibular, deep cervical, and superficial cervical nodes are examples.
- Lymph node tissue contains reticular cells, macrophages, and lymphocytes.
- The structure of lymph nodes aids filtration of harmful substances.
Spleen
- The spleen is the largest lymphatic organ.
- It contains reticular and lymphatic tissue.
- Located in the left hypochondriac region of the abdomen.
- Situated between the stomach fundus and the diaphragm.
- Typically measures about 12 cm long, 7 cm wide, and 2.5 cm thick.
- Weighs approximately 200 grams.
- The spleen's function includes filtering blood and producing lymphocytes.
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