Biology STAAR (State of Texas Assessments of Academic Readiness) Practice Test

Question: 1 / 400

Which component is part of the lymphatic system?

Liver

Thymus

The thymus is an essential component of the lymphatic system, which is integral to the immune system of the body. It is a small organ located behind the sternum and plays a critical role in the development and maturation of T-lymphocytes, commonly known as T cells. These T cells are a type of white blood cell that is crucial for adaptive immunity, helping the body to identify and respond to pathogens like viruses and bacteria.

The lymphatic system includes various organs and structures that assist with immunity and fluid balance, such as lymph nodes, the spleen, and the thymus itself. Unlike the liver, pancreas, and heart, which are primarily involved in metabolic processes, digestion, and circulation respectively, the thymus specifically contributes to the body's defense mechanisms. This makes it a vital organ in the context of the lymphatic system.

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Pancreas

Heart

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