The term Dysplasia describes the enlargement of an organ or tissue because of an abnormal increase in the number of cells in the tissue.
Cervical dysplasia is a precancerous condition in which abnormal cell growth occurs on the surface lining of the cervix or endo-cervical canal, the opening between the uterus and the vagina.
Symptoms:
There are typically no symptoms of cervical dysplasia. Occasionally, abnormal bleeding may occur. However, in the absence of symptoms, the cell changes are invisible to the naked eye and are usually found during a regular Pap test.
Answer:
Stem cells are cells in the human body that have the ability to develop into many other body cell types. Stem cells are very useful for drug development, research, they aren't likely to be rejected in transplants, and are used to repair damaged or diseased cells and tissues. However, they cannot be grown for long periods of time, there are very small numbers in each tissue and cell making them very hard to find, and for certain studies they have been shown to cause cancer. To be honest, using them in research does have its pros and cons, they are very useful and easier to use in research, plus they can help repair damaged and diseased cell tissues. But at the same time they can be difficult to use correctly and properly, it can cause serious health problems if cancer doesn't take place. I think that using them in research is okay, as long as they are used correctly and properly.
Hope this helps! :)
Air moves into the lungs when the air pressure in the lungs is lower than the air pressure outside of the lungs. This occurs when the muscels of the diaphragm contract.
You can see this by breathing in and out deeply. When you breath in you can feel your chest being pushed up and out by your diaphragm. The reason the pressure in the chest is lower is that when you breathe in you are increasing the volume of your chest. As there is the same amount of air in your chest the pressure decreases.
