Adjustment of saliva secretion
The adjustment of saliva secretion is completely neurfactratic, including non-conditional reflection and conditional reflection.
Savior of salivary gland has sympathetic nerve and deputy-sensitive nerve. When these two kinds of neurons are excited, they have caused a degree of saliva secretion, but is mainly based on the role of deputy-sensitive nerve. When the secondary sex is excited, the periphery of the acetylcholine acts on the secretion of the salivary gland, the strongly thinned saliva. When the sympathetic is excited, there is less viscous saliva. In the case of acetylcholine or similar medicine, a large amount of saliva can be caused, and the acetyl cholinergic (such as atropine) can inhibit saliva secretion.
When the mechanical, chemical, temperature sensor in the mouth is stimulated, excited along the incoming fibers in the brain nerve along the V, VII, ⅸ, XX, and the primary center is extension. The advanced center is at the hypothalamus and the cerebral cortex, and then excited along the passage of nerves to each salivary gland, causing saliva secretion, which is non-conditional reflective saliva secretion.
Based on the above non-conditional reflection, the environment, the shape, color, and fragrance, etc. of the food can become the conditional stimulation of the conditions, causing saliva secretion, "Wangmei quenus" is an example. The saliva in eating is secreted, and there are both non-conditional reflections and conditional reflection regulation.
Reasons for fluid of fluid
In daily life, some people do not know how to export water, with the following main reasons:
1. When you have a defect, it is not used to it, the foreign matter is obvious, the stimulation of saliva is increased; the saliva is stimulating the mucosa causes nausea; mucous membrane pain, redness and ulcers can cause increased salvation.
2. Dry diseases such as dental caries, acute chronic inflammation, periodontal diseases.
3. Oral mucosal disease, such as recurrent acne patients, herpes sex inflammation, chronic recurrent Affi arthritis. There are too many teeth in the oral cavity. When you speak, the mouth is increased, and you can't live your lips.
4. Senior disease, brain atrophy, and other brain diseases.
5. The stimulation of digestive tract mucosa equivalent to esophageal and stomach can cause saliva secretion.
6. Smell, visual and auditory can feel the color, fragrance, taste of food, to form food, formation of stimulation, induce the excitement of saliva secretion in the corresponding central and cerebral cortex, causing a large amount of saliva.
7. Light can stimulate saliva secretion, while darkness and fear can reduce saliva secretion.
8. Any stimuli can cause additional saliva secretion.