Final answer:
Exocrine glands can have one of three morphologies: simple unbranched ducts, compound branched ducts, or a combination of tubules and pockets known as tubuloalveolar (tubuloacinar) glands.
Step-by-step explanation:
The three morphologies an exocrine gland can have are related to their structural architecture. These types of exocrine glands include:
- Simple glands: These have a single unbranched duct.
- Compound glands: These glands have a duct that branches into two or more ducts.
- Tubuloalveolar (tubuloacinar) glands: A combination of tubular and alveolar structures, they consist of tubes that form pockets.
Understanding these structures helps us comprehend how glands like serous glands, which line internal cavities, and others, such as the exocrine portion of the pancreas, operate through their respective duct systems.