Dementia refers to deterioration of intellectual abilities caused by an organic brain disorder.
<h3>What is dementia?</h3>
- In dementia, a person loses memory, has trouble in reasoning and solving problems and other such symptoms which interfere in the normal activities of an individual.
- It is caused due to brain cell damage which hinders the brain cells in interacting with each other while generating responses.
- Dementia is not a distinct disease but is caused due to a variety of medical conditions especially Alzheimer’s disease.
- Symptoms can be managed by medications and therapy but there is no proper cure of dementia in later stages.
- Certain factors which increase the risk of dementia are smoking, diabetes, aging, alcohol abuse.
- A person even has difficulties in remembering the name of close ones.
Learn more about dementia here:
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The correct answer is: mucosa
The alimentary canal or gastrointestinal tract consist of four layers: mucosa, submucosa, muscular layer and serosa.
Mucosa is the layer that surrounds the lumen, so it is exposed to the food . Mucosa is composed of epithelium (active in absorptive and secretory processes), lamina propria (connective tissue) and muscularis mucosa (peristaltic movement).
