Final answer:
Both glands referred to in A and B are exocrine glands, meaning they release secretions through ducts to external surfaces or body cavities.
Step-by-step explanation:
The glands shown in A and B share the characteristic of being exocrine glands. This means they both release their secretions through ducts to an epithelial surface.
Whether these glands are unicellular like goblet cells or multicellular like serous glands and sweat glands, they function to expel substances such as mucous, saliva, and digestive enzymes to external surfaces or into body cavities. Not all exocrine glands are the same, though; some like sebaceous glands release oils to the skin surface, while others like salivary glands release saliva into the oral cavity to aid in digestion.
Exocrine glands release their contents through a duct that leads to the epithelial surface. Examples of exocrine glands include sweat glands, salivary glands, and mammary glands. These glands secrete their products, such as sweat, saliva, and breast milk, through tubular ducts.