Anatomy and Physiology II Practice Test

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Study for the Anatomy and Physiology II Test. Use flashcards and multiple choice questions, each with hints and explanations. Prepare effectively for your exam!

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Which of the following correctly identifies a function of the spleen?

Produces hormones
Filters blood
Regulates blood sugar
Stores bile

The correct answer is: Filters blood

The spleen primarily functions as a filter for blood, making it a critical organ within the immune system. It is responsible for the removal of old or damaged red blood cells, as well as filtering out pathogens and debris from the bloodstream. By doing this, the spleen helps in the recycling of iron and purifying the blood, thus playing a necessary role in maintaining overall health. Additionally, the spleen serves as a site for the proliferation of immune cells, particularly lymphocytes, which are essential for the body's immune response. It can also store a reserve of blood that can be released during times of increased demand, such as after significant blood loss. The other listed functions do not align with the spleen's role. For instance, hormone production is mainly regulated by endocrine organs such as the thyroid and adrenal glands. Blood sugar regulation is primarily managed by the pancreas. Meanwhile, bile production and storage are functions associated with the liver and gallbladder, not the spleen. Therefore, the ability of the spleen to filter blood is its defining and essential function.