Sistemas Flashcards
What are the primary lymph organs of the lymphatic system?
Thymus and bone marrow
These organs are crucial for the development and maturation of lymphocytes.
What are the secondary lymphatic organs?
Mucosa-associated lymphatic tissue (MALT), spleen, and lymph nodes
These organs play essential roles in immune response and lymph filtration.
What is the main function of the lymphatic system?
Return excess interstitial fluid and waste products to the bloodstream
This function helps maintain fluid balance in the body.
How is interstitial fluid absorbed by the lymphatic system?
Through lymphatic capillaries via diffusion
This process allows lymphatic vessels to collect excess fluid from tissues.
What are the two main ducts that lymph fluid drains into?
Right lymphatic duct and thoracic duct
These ducts transport lymph fluid back into the circulatory system.
What is the secondary function of the lymphatic system?
Immune defense
This involves transporting leukocytes and stimulating immune responses.
What type of cells are mainly transported by the lymphatic system for immune response?
Lymphocytes
These include B cells and T cells that are critical for adaptive immunity.
What is chyle?
A substance that transports fats from the digestive system to the bloodstream
Chyle is formed in the intestinal lymphatic vessels after fat digestion.
What happens to lymph fluid as it accumulates proteins, fats, and cellular debris?
It adopts a milky appearance
This change indicates the presence of absorbed nutrients and waste.
Where do B cells mature?
In the bone marrow
B cells then differentiate and proliferate in response to antigens.
Where do T cells migrate for maturation?
To the thymus
This is essential for their development and functionality.
What induces the differentiation and proliferation of B lymphocytes?
Antigen presentation
This process is crucial for initiating an effective immune response.
What is the role of lymph nodes in the lymphatic system?
Sites for lymph filtration and storage of lymphocytes
They play a key role in filtering lymph fluid and mounting immune responses.
What can cause lymph nodes to become enlarged?
Inflammatory processes due to local infection, malignancy, or granulomatous disease
This is a common response indicating immune activation.
True or False: Lymph fluid is opaque when initially formed from interstitial fluid.
False
Lymph fluid is initially transparent before it accumulates proteins and fats.
Fill in the blank: Lymphatic vessels and capillaries transport lymph fluid through a network to the _______.
Right subclavian vein and left subclavian vein
These veins are the final drainage points for lymph fluid before it enters the bloodstream.
