What is the circulatory system responsible for

The circulatory system is a vast network of organs and vessels that is responsible for the flow of blood, nutrients, hormones, oxygen and other gases to and from cells.

Circulatory system contains of:

Heart, Lung, Blood Vessel (Arteries & Veins)

Responsible for: Transportations

1- Deliver Oxygen & get out Co2

2- Deliver nutrients & get out waste product

3- Deliver immune cells to infection location "Inflammatory cells, RBC's & Lymphocytes" to deal with invaded organisms by kill it.

4- Deliver Secreted Hormones to target cells

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

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