A diagram of part of a salivary gland showing a serous acinus and mixed serous-mucous acinus. Salivary glands are made up of secretory acini (acini-means a rounded secretory unit) and ducts. There are two types of secretions-serous and mucous.The acini can either be serous, mucous, or a mixture of serous and mucous.A serous acinus secretes proteins in an isotonic watery fluid. diagram of part of a salivary gland showing a serous acinus and mixed serous-mucous acinus. Salivary glands are made up of secretory acini (acini-means a rounded secretory unit) and ducts. There are two types of secretions-serous and mucous.
John Cabot (Italian: Giovanni Caboto, Venetian: Zuan Chabotto; c. 1450 â c. 1500) was a Venetian navigator and explorer whose 1497 discovery of the coast of North America under the commission of Henry VII of England is commonly held to have been the first European exploration of the mainland of North America since the Norse visits to Vinland in the ...
John Cabot's Voyage of 1498. Henry VII's northern Columbus returned to Bristol on 6 August 1497. Cabot and everyone else thought that a new, shorter route to Asia had been found. No silks and spices, but these could not be far away - and it was known that Columbus himself had not yet found anything of great commercial value.