Alberta Written Barber Practice Exam

What structure filters foreign particles from the lymph vessels?

1. Spleen

2. Lymph nodes

3. Thymus

4. Bone marrow

The correct answer is: Lymph nodes

The lymph nodes play a crucial role in the immune system by filtering foreign particles from the lymph vessels. They are small, bean-shaped structures distributed throughout the body along the lymphatic system. Lymph nodes contain lymphocytes, a type of white blood cell, which helps to identify and respond to pathogens like bacteria and viruses. As lymph fluid passes through these nodes, it is cleansed of debris, pathogens, and abnormal cells, which ensures that the lymphatic fluid is free from harmful entities before it returns to the bloodstream. This filtering process is vital for maintaining overall health and for the effective functioning of the immune response. The spleen, while it also has functions related to immune response and blood filtration, specifically targets blood rather than lymph fluid. The thymus is primarily involved in the maturation of T cells, which are a subset of lymphocytes, and bone marrow is responsible for producing blood cells, including the lymphocytes involved in the immune response.