What is the name of the secretory tissue within the mammary gland that is shaped like a grape?

The secretory tissue within the mammary gland that resembles a grape is known as alveoli. These structures are small sac-like units where milk is produced and stored before being expelled during nursing or milking. Each alveolus is lined with milk-secreting cells, which are responsible for synthesizing and releasing milk components. The grape-like cluster arrangement maximizes surface area for secretion and facilitates the efficient transfer of milk into the ductal system.

Understanding the function and structure of alveoli is crucial for anyone involved in dairy management or veterinary practices, as the health and productivity of these structures can directly impact milk yield and quality.

In contrast, adipose tissue primarily serves as fat storage rather than a secretory function, while lobules are structural components that house clusters of alveoli. Cisterns are larger milk-holding structures within the mammary gland, but they do not have the grape-like appearance of the alveoli.