Question

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how does the lymphatic system prevent infections?
by regulating hormone levels and maintaining homeostasis.
by producing red blood cells and platelets.
by circulating oxygen throughout the body and removing carbon dioxide.
by secreting digestive enzymes and breaking down food.
by filtering out harmful substances and producing lymphocytes.

Explanation:

The lymphatic system has lymph nodes that filter out harmful substances like pathogens. It also produces lymphocytes (such as B - cells and T - cells) which are crucial for the immune response.

• Regulating hormone levels is mainly the function of the endocrine system.
• Producing red blood cells and platelets is a function of the bone marrow (in the context of hematopoiesis).
• Circulating oxygen and removing carbon dioxide is the role of the respiratory and circulatory systems.
• Secretion of digestive enzymes and breaking down food is the function of the digestive system.

Answer:

By filtering out harmful substances and producing lymphocytes.