I believe the answer to this question to this would be A. Waist circumfrence. sorry for spelling errors. but i think this because all you are doing is taking a tape measure and going around your waste. That is simple and tape measure doesn't cost that much
The outside of the barrel and the flange
Considering supplements are a type of medication, then I would assume that manufacturers don't need permission from the Alcohol, Tobacco, and Firearms Federal Regulatory Commission.
The endocrine system is basically a whole network of glands that produce hormones (the body's chemical messengers), which serve to control the activities of your organs and cells (for instance, metabolism, bodily growth).
<u>Examples of glands in the endocrine system are</u>:
- the pituitary gland (located in the brain, aka "master gland" since it control many other glands)
- adrenal glands (located above kidneys)
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* the hypothalamus structure in the brain is also a VERY important part of the endocrine system since it serves to connect the nervous system to the endocrine system (located under the thalamus in the brain)