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Are arteries, veins and capillaries part of the circulatory, endocrine, excretory, or respiratory system?

Answer 1

they are parts of the circulatory sytem

When classifying veins and capillaries within the circulatory and endocrine systems, it can be confusing because they perform secondary endocrine functions, such as delivering hormones from the endocrine system to and from body cells. Consequently, blood vessels are only considered to perform secondary functions within the respiratory, excretory, and endocrine systems, while they perform primary functions within the circulatory system.

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Answer 2

Lucas Aguilar

Arteries, veins, and capillaries are part of the circulatory system.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.