Anatomy and Physiology II Practice Test

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Study for the Anatomy and Physiology II Test. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Get ready to ace your exam!

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What are the numerous lymph vessels entering a lymph node called?

Efferent vessels
Afferent vessels
Capillaries
Veins

The correct answer is: Afferent vessels

The numerous lymph vessels entering a lymph node are referred to as afferent vessels. These vessels carry lymph, which is a clear fluid containing white blood cells, proteins, and other substances, from peripheral tissues to the lymph nodes. The primary function of the lymph nodes is to filter this lymph, allowing immune cells to respond to pathogens and other foreign particles. Lymph nodes typically have multiple afferent vessels, reflecting their role in collecting lymph from various areas of the body. This design allows lymph nodes to effectively monitor and respond to immune threats by capturing and processing the lymph that flows through them. In contrast, efferent vessels are those that exit the lymph node, carrying filtered lymph away towards the bloodstream. Understanding this relationship is important for comprehending how the lymphatic system operates and how it contributes to immune function.