Top 100 Operators: Proved Reserves and Production, Operated vs Owned, 2009 1 Top 100 Operators: Proved Reserves and Production, Operated vs Owned, 200 9. EIA data release policy does not allow company-specific proved reserves estimates, as. publishing these volumes could compromise proprietary data.
Endocrine glands include: 1  Adrenal glands: Two glands that sit on top of the kidneys that release the hormone cortisol. 2  Hypothalamus: A part of the lower middle brain that tells the pituitary gland when to release hormones.  Ovaries: The female reproductive organs that release eggs and produce sex hormones.
The endocrine system is the system of glands, each of which secretes a type of hormone into the bloodstream to regulate the body. While powerful, the endocrine organs are relatively small.Hormones are chemical messengers that have many different functions.he endocrine system is the system of glands, each of which secretes a type of hormone into the bloodstream to regulate the body. While powerful, the endocrine organs are relatively small.