Save. Lightheadedness can be caused by a variety of conditions. It is a fainting or dizzy sensation primarily caused by a decrease in blood flow to the brain. High blood pressure, heart attack, pregnancy, anxiety and depression are common reasons why an individual may experience feeling lightheaded.eart Attack. Heart attacks are caused by low blood flow to the heart. The heart can die or become permanently damaged. If lightheadedness accompanies chest pain, change in vision or loss of speech, this could be a sign of a heart attack.
ossify - make rigid and set into a conventional pattern; rigidify the training schedule; ossified teaching methods; slogans petrify our thinking rigidify, petrify stiffen - make stiff or stiffer; Stiffen the cream by adding gelatine
The new bone formation radiates outward from ossification centres in the membrane. This process is called intermembranous ossification. There are several ossification centres in the skull. At birth, bone formation is incomplete, and soft spots can be felt between these centres. The lines where the new bone from adjacent centres meets form cranial sutures visible on the surface of the adult skull.