part_of adult salivary gland adult salivay gand type I acinus Agranular acini Cluster of non-granular cells located along the anterior part of the salivary ducts. Also known as agranular acini. Believed to be responsible for hygroscopic regulation of water balance by direct sorption of atmospheric moisture. Type I acini secrete highlyconcentrated salty solutions into the preoral canal and suck back the dilute solutions, thereby gaining new water. Fig. 8-5, Fig. 8-6, Fig. 8-7, Fig. 8-8, Fig. 8-9, in Biology of Ticks ISBN:0-19-505910-7. Pyramidal alveoli TADS:0000126 TADS:0000126 default_namespace