Parietal cell definitions
| Word backwards | lateirap llec |
|---|---|
| Part of speech | noun |
| Syllabic division | pa-ri-e-tal cell |
| Plural | The plural form of the word parietal cell is parietal cells. |
| Total letters | 12 |
| Vogais (3) | a,i,e |
| Consonants (5) | p,r,t,l,c |
Parietal Cell
Parietal cells, located in the lining of the stomach, are specialized cells responsible for producing gastric acid, also known as hydrochloric acid. This important acid is essential for the breakdown of food in the stomach during digestion.
Structure and Function
Parietal cells are unique in structure, featuring a large number of mitochondria to support their high-energy needs for acid production. They also have an extensive network of canaliculi, small channels that allow for the secretion of gastric acid into the stomach lumen. The acid produced by parietal cells helps to create an acidic environment in the stomach, which is crucial for activating enzymes and breaking down proteins in food.
Regulation
The activity of parietal cells is tightly regulated by various factors, including hormones, nerves, and other chemical signals in the body. For example, the hormone gastrin stimulates parietal cells to produce more acid when food enters the stomach. Additionally, histamine and acetylcholine are neurotransmitters that can also stimulate acid production by parietal cells.
Role in Health and Disease
In normal physiological conditions, parietal cells play a crucial role in the digestive process by maintaining the acidity of the stomach. However, dysfunction of these cells can lead to conditions such as gastritis, peptic ulcers, and even gastric cancer. It is important to maintain the health and proper functioning of parietal cells to support overall digestive health.
In conclusion, parietal cells are essential for the production of gastric acid in the stomach, playing a key role in the digestive process. Understanding the structure, function, and regulation of these cells is important for maintaining optimal digestive health and preventing associated conditions.
Parietal cell Examples
- The parietal cell secretes hydrochloric acid in the stomach.
- The doctor recommended medication to decrease acid production from the parietal cells.
- Parietal cell hyperplasia can lead to excessive gastric acid secretion.
- Researchers are studying the regulation of parietal cell function in the digestive system.
- A parietal cell antibody test can help diagnose autoimmune gastritis.
- Damage to the parietal cells can result in vitamin B12 deficiency.
- Alcohol consumption can affect the function of parietal cells in the stomach.
- Patients with pernicious anemia may have antibodies that target parietal cells.
- The chief role of parietal cells is to produce stomach acid for digestion.
- Certain medications can inhibit the activity of parietal cells to reduce acid reflux.