The term "acini of Malpighi" refers to the specialized cells and structures found in the exocrine glands, particularly the salivary glands and the pancreas. These acini are small, rounded or flask-shaped structures that make up the functional unit of these glands and are responsible for producing and secreting various substances.
In the context of the salivary glands, the acini of Malpighi are clusters of secretory cells that produce saliva. They are arranged in a branching network throughout the gland and are connected to a duct system that transports the secreted saliva to its final destination.
In the pancreas, the acini of Malpighi are responsible for producing digestive enzymes. These enzymes are crucial for the breakdown of complex molecules, such as carbohydrates, proteins, and fats, into simpler forms that can be easily absorbed by the body. The acini secrete the enzymes into small ducts, which eventually merge to form the main pancreatic duct, leading to the small intestine.
The acini of Malpighi are lined with specialized epithelial cells that have a high secretory capacity. These cells are rich in organelles such as rough endoplasmic reticulum and Golgi apparatus, which are involved in the synthesis, packaging, and transportation of the secretory products.
Overall, the acini of Malpighi play a vital role in exocrine gland function by synthesizing and releasing various substances necessary for proper digestion and physiological processes in the body.
