Alimentary Gland Secretory Functions Quiz

Alimentary glands can be classified into serous, mucous, and mixed glands. The stimuli that activate secretion include nervous stimuli, hormonal stimuli, and local stimuli such as mechanical and chemical irritation of the mucosa.

The stages of saliva secretion include the acini stage and the salivary duct stage. Salivary secretion is regulated by both neural and humoral mechanisms, with parasympathetic stimulation increasing saliva production and sympathetic stimulation decreasing it.

Gastric acid secretion is primarily controlled by the hormone gastrin, as well as histamine and acetylcholine. Parietal cells are responsible for the secretion of gastric acid, and its release is regulated by various stimuli including neural and hormonal factors.

Pancreatic enzymes play a crucial role in the digestion of carbohydrates, proteins, and fats. The pancreas also secretes bicarbonate and water to neutralize the acidic chyme entering the duodenum from the stomach, creating an optimal environment for enzymatic activity.

The different types of salivary glands include parotid, submandibular, and sublingual glands. Saliva differs from plasma in its composition, containing higher levels of potassium, bicarbonate, and enzymes such as amylase.