nonpolar covalent bond. (physical chemistry). A bond in which a pair of electrons is distributed or shared equally between two atoms. 1  Facebook.2  Twitter.onpolar covalent bond. (physical chemistry). A bond in which a pair of electrons is distributed or shared equally between two atoms. 1  Facebook.
When is a barrel chest a sign of a disease process? Chronic obstructive pulmonary disease (COPD) is the most common instance in which a barrel chest will occur. In these cases, itâs a sign of the lungs being over-expanded. This is caused by the loss of elasticity and results in the person having hyper-inflated lungs.
Chronic Obstructive Pulmonary Disease, or COPD, is a condition in which the air passages in the lungs are constricted and inflamed. Chronic inflammatory disease of the liver may cause changes in the brain, which lead to personality changes.bnormal chest X-ray findings are usually not seen until COPD is severe. Celiac disease, which causes damage to the small intestine, is an example of a chronic inflammatory disease. Chronic inflammatory diseases often cause a great deal of discomfort.