Final answer:
The lymphatic system is responsible for transporting excess fluid back to the bloodstream, absorbing lipids from the digestive system, and defending the body against diseases. The regulation of insulin and glucagon is not a function of the lymphatic system. The system plays a vital role in maintaining fluid balance and supporting immune functions.
Explanation:
Functions of the Lymphatic System
The lymphatic system has several important functions in the body, and the following options correctly describe its roles:
- Transports excess fluid away from the interstitial spaces, and returns it to the bloodstream: This process helps maintain fluid balance in the body by collecting excess interstitial fluid, which is then returned to the blood circulation.
- Absorbs lipids from the digestive system, and transports them to the bloodstream: The lymphatic system plays a crucial role in lipid absorption through the lacteals, which are specialized lymph vessels in the intestines that help in transporting dietary fats into the bloodstream.
- Defends the body against diseases: The lymphatic system is essential for the immune response, as it contains various lymphoid organs, such as the lymph nodes and spleen, which help protect the body by producing and transporting lymphocytes.
The option regarding insulin and glucagon regulation is incorrect, as these hormones are regulated by the pancreas, not the lymphatic system.
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