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.
1 One sysâ¦. 2  Coping With COPD: Reducing Pulmonary Hypertension Pulmonary hypertension from COPD (Chronic Obstructive Pulmonary Disease) is caused by a sharp increase in blood pressure in the pulmonary arteries. 3  This condition puts signifâ¦. 4  The Five Major Parts of the Brain At its most basic, the brain controls the body.