(a) What is an exocrine gland? Name two exocrine glands.
(b) What is an endocrine gland? Name two endocrine glands.
(a) Exocrine gland: Glands that discharge their secretions into ducts are known as exocrine glands. Exocrine glands are duct bearing glands. Eg. sweat glands, salivary glands
(b) Endocrine gland: Glands that do not discharge their secretions into ducts are known as endocrine glands. These glands discharge their secretions directly into the blood. They are also called duct-less glands. Eg. the pineal gland, pituitary gland