Exocrine refers to glands that secrete their products externally, while their antonyms are the endocrine glands which secrete their products internally into the bloodstream. The endocrine glands are responsible for producing hormones that regulate various bodily processes, such as growth, metabolism, and reproduction. They include the pituitary gland, thyroid gland, adrenal gland, pancreas, and gonads, among others. On the other hand, exocrine glands are classified into two types; those that secrete their products onto body surfaces or cavities, such as sweat glands and salivary glands, and those that release their products into ducts, such as the liver, pancreas, and mammary glands. Overall, understanding the antonyms of exocrine is essential in comprehending the different types of glands present in the body.