A stoma (from the Greek word for 'mouth') is where an opening is made on your abdomen which allows waste to pass out of the body.
Stomates are generally more numerous on the underside of leaves. They provide for the exchange of gases between the outside air and the branched system of interconnecting air canals within the leaf. A stomate opens and closes in response to the internal pressure of two sausage- shaped guard cells that surround it. The inner wall of a guard cell is thicker than the outer wall.
When the guard cell is filled with water and it becomes turgid, the outer wall balloons outward, drawing the inner wall with it and causing the stomate to enlarge. Guard cells work to control excessive water loss, closing on hot, dry, or windy days and opening when conditions are more favourable for gas exchange. At dawn a sudden increase in stomatal opening, reaching maximum near noon, is followed by a decline because of water loss. Recovery and reopening are then followed by another decline as darkness approaches. The concentration of carbon dioxide in the air is another regulator of stomatal opening in many plants. When carbon dioxide levels fall below normal (about 0.
Define stoma: any of various small simple bodily openings especially in a lower animal.
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- Define stomal: of, relating to, or situated near a surgical stoma — stomal in a sentence.
- Stomata definition, a plural of stoma.
- An ostomy is surgery to create an opening (stoma) from an area inside the body to the outside. It treats certain diseases of the digestive or urinary systems.
- Ostomy: Adapting to life after colostomy, ileostomy or urostomy. Learn all you can about life with an ostomy. Use this information to boost your self-esteem and help.
- In the worst case scenario I have simply not been fed - all because hospitals simply can't seem to get around my lactose intolerance and stoma bag.
- After surgery, the stoma will be swollen. It will shrink over the next several weeks. The skin around your stoma should look like it did before surgery.
- With Stoma Care an ostomy is a surgically made opening from the inside of an organ to the outside. Stoma is the Greek for mouth or opening, learn about Stoma Care.