A term to describe a muscle that contracts to initiate an action

Which of the following describes the hypothalamic hormones?

A. They act as inhibitor of selected enzyme reactions B. They act indirectly on endocrine glands C. They act as releasing hormones on the pituitary D. They are all glycoproteins

For the following questions, use an ICD-9-CM code book to select the appropriate code(s) for the diagnostic statements given

Anemia, essential