Question

Which of the following statements is true regarding the endocrine system?

a. Hormones bind to receptors on/in the target cell plasma membrane or in the cell.
b. Exocrine glands release non-hormonal substances into ducts.
c. Steroids are lipid-soluble hormones.
d. All of the above are correct.
e. Only a & c are correct.

Answer 1

The endocrine system releases hormones into the bloodstream, which bind to receptors on or in target cells. Steroids are lipid-soluble hormones that can bind to intracellular receptors in target cells.

Step-by-step explanation:

The endocrine system is a system of glands that release chemical messenger molecules called hormones into the bloodstream. Hormones bind to receptors on or in the plasma membrane of target cells. This binding initiates a response within the cell. Steroids are lipid-soluble hormones that can diffuse across the plasma membrane and bind to intracellular receptors in the cytoplasm or nucleus of target cells.