There are five digestive juices, viz., saliva, gastric juice, pancreatic juice, succus entericus (intestinal juice) and bile, secreted from salivary, gastric, pancreatic, intestinal and hepatic gland respectively, which are poured in the alimentary canal at its different levels successively from oral to aboral side. The term, mechanism of secretion is meant by- (a) How the glands respond to secrete by [...]
The following points highlight the three important stages of swallowing. The stages are: 1. Buccal or Oral Stage 2. Pharyngeal Stage 3. Esophageal Stage. 1. Buccal or Oral Stage: By the action of tongue, and muscles contracting against the palate, the food is converted into bolus which is lubricated by saliva. The bolus is then pushed by the tongue to [...]
In this article we will discuss about the structure of salivary glands of human with its suitable diagram. Secretory unit of salivary gland is an acinus. There are two types of acini in the salivary glands namely serous and mucous type. Parotid gland is mostly made up of serous type, sublingual is predominantly mucous type, sub-mandibular is both, but more [...]