Ionic exchange between enamel surface and environment________?

The patient suffered from hypogondism, failure to thrive, lose of taste and unable to maintain stability. This shows the deficiency of________?

Which of the following muscles moves the condyle and articular disc anterior and downwards on glenoid fossa________?

Plummer – vinson syndrome________?

Highest point on skull________?

Voluntary movement of eye ball is controlled by________?