What is the main function of the lymphatic system?

What is the main function of the lymphatic system?

• A. To circulate nutrients
• B. To produce hormones
• C. To transport lymph and help defend against infection
• D. To facilitate digestion

Answer: (C)

The lymphatic system primarily serves to transport lymph, a fluid that contains infection-fighting white blood cells, throughout the body. This system is crucial for maintaining fluid balance, as it helps to return excess interstitial fluid to the bloodstream. Additionally, one of its key roles is in immune function, as it is integral in the body's defense against pathogens. The lymphatic vessels and lymph nodes work together to filter lymph and produce immune responses, effectively helping to detect and combat infections. The other options reflect functions that belong to different systems in the body. Circulating nutrients is primarily the role of the circulatory system, while hormone production is associated with the endocrine system. The digestive system is responsible for facilitating digestion and processing food. Thus, the primary emphasis on transporting lymph and supporting immune defenses distinctly characterizes the main function of the lymphatic system.

The lymphatic system primarily serves to transport lymph, a fluid that contains infection-fighting white blood cells, throughout the body. This system is crucial for maintaining fluid balance, as it helps to return excess interstitial fluid to the bloodstream. Additionally, one of its key roles is in immune function, as it is integral in the body's defense against pathogens. The lymphatic vessels and lymph nodes work together to filter lymph and produce immune responses, effectively helping to detect and combat infections.

The other options reflect functions that belong to different systems in the body. Circulating nutrients is primarily the role of the circulatory system, while hormone production is associated with the endocrine system. The digestive system is responsible for facilitating digestion and processing food. Thus, the primary emphasis on transporting lymph and supporting immune defenses distinctly characterizes the main function of the lymphatic system.