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.
Sometimes a broken rib punctures an artery and causes internal bleeding around the lung, which can cause shortness of breath. Rarely, a broken rib can cause a âpunctured lung,â or pneumothorax, in which the lung collapses and air enters the space around the lung. This can cause severe pain and shortness of breath. Occasionally, fluid or air collects outside the lung and squeezes the lung. This also can cause shortness of breath.