Which of the following is not correct?

TMJ is supplied by ________?

One of the earliest symptoms of Vit. A deficiency is________?

When horse serum is injected intravenoulsy in to a rabbit and again in to the skin two or three weeks later, what is the necrotizing reaction that occurs as the site of the second injection________?

The size of apical foramen of maxillary teeth in adult is________?

Multinucleated giant cells are least likely to be found in which of the following disorders?