Eicosanoids are NOT true hormones because they __________.

Which of the following signals would affect local cells by releasing chemicals into the extracellular fluid?

Steroid hormones are synthesized from __________.

In which of the following mechanisms of hormone action do intracellular calcium ions act as a final mediator?

The chemical classification of hormones does NOT include __________.

The use of a chemical messenger to transfer information from cell to cell within a single tissue is referred to as_____ communication. (a) direct, (b) paracrine, (c) hormonal, (d) endocrine.

Multiple ChoiceMore than one choice may apply.Which is generally true of hormones?a. Exocrine glands produce them.b. They travel throughout the body in the blood.c. They affect only non–hormone-producing organs.d. All steroid hormones produce very similar physiological effects in the body.

FSH production in males supports (a) the maturation of sperm by stimulating nurse cells, (b) the development of muscles and strength, (c) the production of male sex hormones, (d) an increased desire for sexual activity.

All of the following are true of the endocrine system, except that it (a) releases chemicals into the bloodstream for distribution throughout the body, (b) releases hormones that simultaneously alter the metabolic activities of many different tissues and organs, (c) produces effects that can last for hours, days, and even longer, (d) produces rapid, local, brief-duration responses to specific stimuli, (e) functions to control ongoing metabolic processes.