The thyroid ___

A. controls the endocrine system.

B. Regulates the metabolism.

C. controls sexual characteristics.

D. regulates metabolism of glucose

Please help I'm missing part of my book

3 answers

http://en.wikipedia.org/wiki/Thyroid
I'm not sure weather it's A or D @Ms. Sue
http://www.google.com/webhp?sourceid=chrome-instant&rlz=1C5CHFA_enUS705US707&ion=1&espv=2&ie=UTF-8#q=thyroid+definition

Read lots and let us know what you decide.