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
Intramembranous ossification: Is the process of bone formation in which the mesenchyme differentiated directly into the bone, example, is the flat bones of the skull. In this process, the mesenchyme first differentiates in to osteoblasts (boneâforming cell) which then begins to deposits osteoid (unmineralized matrix).he primary centers of ossification appear in the diaphysis, and the process continues toward the epiphysis (fig. 4C) as in the long bone while the secondary centers appear in the epiphysis in most bones particularly during the first few years after birth (fig.4H).