Unlike endocrine glands, exocrine glands

a. do not usually have ducts.
b. release secretions directly into the blood.
c. release hormones.
d. release secretions outside of the body.

the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.