Multiple Choice
Which of the following is a feature of the lymphatic system?
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20. The Lymphatic System
Introduction to the Lymphatic System
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When does interstitial fluid become lymphatic fluid?
A
When it enters the lymphatic capillaries
B
When it is filtered by the kidneys
C
When it is absorbed by body cells
D
When it leaves the blood capillaries
Verified step by step guidance1
Understand the concept of interstitial fluid: Interstitial fluid is the fluid that surrounds and bathes the cells in tissues. It originates from blood plasma that leaks out of capillaries during the exchange of nutrients and waste products.
Learn about lymphatic fluid: Lymphatic fluid, or lymph, is the fluid that circulates within the lymphatic system. It plays a crucial role in immune defense and the removal of waste products from tissues.
Recognize the transition point: Interstitial fluid becomes lymphatic fluid when it enters the lymphatic capillaries. These capillaries are specialized structures that absorb interstitial fluid and transport it into the lymphatic system.
Understand the role of lymphatic capillaries: Lymphatic capillaries are highly permeable and allow interstitial fluid, along with proteins, waste products, and immune cells, to enter the lymphatic system. This marks the transition from interstitial fluid to lymphatic fluid.
Eliminate incorrect options: The fluid is not filtered by the kidneys, absorbed by body cells, or simply leaving the blood capillaries to become lymphatic fluid. The correct answer is specifically tied to its entry into the lymphatic capillaries.
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