acinaire

Acinaire refers to a specific anatomical arrangement found in glands and other structures. It describes a cluster of small, sac-like or berry-shaped secretory units, also known as acini. These acini are typically grouped together at the end of a duct system. The term "acinaire" is derived from the Latin word "acinus," meaning "berry" or "grape."

In histology and anatomy, acinaire glands are characterized by their grape-like appearance. The secretory cells within each acinus are responsible for producing and secreting a particular substance. This substance is then released into a lumen within the acinus and travels through a series of ducts to reach its final destination. Examples of acinaire glands include certain salivary glands, mammary glands, and the exocrine pancreas. The structure allows for a large surface area for secretion within a compact space. The arrangement is distinct from other glandular structures like tubular glands, which have a tube-like shape, or alveolar glands, which are more sac-like but not necessarily clustered in small berry-like units. The term is most commonly used in the context of describing the morphology of glandular tissue.