Leavening agent. A leaven /ËlÉvÉn/, often called a leavening agent /ËlÉvÉnÉªÅ/ (and also known as a raising agent), is any one of a number of substances used in doughs and batters that cause a foaming action (gas bubbles) that lightens and softens. An alternative or supplement to leavening agents is a mechanical action by which air is incorporated.
Symptoms of Dislocated Rib. Depending on which rib has been dislocated, the discomfort or pain may be felt in your back or chest. After some time, the skin over the dislocated ribs may swell and bruise. The moment the injury happens, a popping sound can be heard and a lump may surface over the rib.
The following medical conditions are some of the possible causes of Rib pain. There are likely to be other possible causes, so ask your doctor about your symptoms. 1  Broken rib. 2  Rib cartilage injury. 3  Osteoarthritis. 4  Rheumatoid arthritis. 5  Multiple myeloma. 6  Osteoporosis. 7  Chronic steroid use. 8  Osteochondritis.