A. Angina (angina pectoris-Latin for squeezing of the chest) is chest discomfort that occurs when there is a decreased blood oxygen supply to an area of the heart muscle. In most cases, the lack of blood supply is due to a narrowing of the coronary arteries as a result of arteriosclerosis.Angina may be felt as:. Angina (angina pectoris-Latin for squeezing of the chest) is chest discomfort that occurs when there is a decreased blood oxygen supply to an area of the heart muscle. In most cases, the lack of blood supply is due to a narrowing of the coronary arteries as a result of arteriosclerosis. Angina may be felt as:
Leavened bread is bread that contains leavening, usually yeast. Leavened bread is soft, light, and fluffy in texture. It contains tiny air pockets, making it somewhat resemble a sponge. The leavening which was mixed into the bread dough causes the dough to rise both before it is baked and during baking.Examples are most kinds of bread you would buy in a grocery or bakery-French bread, Italian bread, sandwich breads and rolls, muffins, etc.east, baking powder, and a combination of baking soda â¦ and vinegar or lemon juice, are the typical leavening agents used in baking. Leavened bread is bread that incorporates any, some, or all of the above agents.
Yeast is a leavening agent. Yeast releases CO2 as a waste product. Bread dough has protein structures called Gluten. The CO2 from the yeast gets trapped in pockets between the gluten strands, thus causing the dough to rise. When the bread bakes, the yeast continues to reproduce and create CO2 gas. The yeast eventually dies when the temperature of the dough gets hot enough. Without yeast, bread would be flat and tough.