객관식
What is the primary role of the thymus in the lymphatic system and in immune responses?
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20. The Lymphatic System
Introduction to the Lymphatic System
객관식
Where does lymph originate in the body?
A
From the interstitial fluid surrounding tissues
B
From the cerebrospinal fluid
C
Directly from the bloodstream
D
From the digestive tract
검증된 단계별 안내1
Understand that lymph is a fluid that is part of the lymphatic system, which plays a crucial role in immune function and fluid balance.
Recognize that interstitial fluid is the fluid that surrounds the cells in tissues, providing them with nutrients and a means to remove waste.
Learn that lymph originates from the interstitial fluid. As blood circulates through the body, some plasma leaks out of the capillaries into the surrounding tissues, becoming interstitial fluid.
Realize that this interstitial fluid is collected by the lymphatic vessels, where it is then called lymph. This process helps maintain fluid balance in the body by returning excess fluid to the bloodstream.
Note that lymph does not originate directly from the bloodstream, cerebrospinal fluid, or the digestive tract, although it can carry substances absorbed from the digestive tract, such as fats, into the bloodstream.
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