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Which of the following is NOT one of the “Connector Economies”?

Hemoglobin is made out of:

There is one artery in the body that carries deoxygenated blood.  It is:

Which of the following hormones increases blood sugar levels?

When the hypothalamus secretes TRH, what happens next?

This thyroid hormone is made in the thyroid gland, but then converted to a different from when it gets to cells:

This hormone makes sure that fuel is in the blood and causes skeletal muscle and bone to undergo mitosis:

The chamber that accepts blood from the Superior Vena Cava ___________.

This type of white blood cell is active when an allergic response to grass occurs:

This structure passes the depolarization of one heart cell to another: