Category: D

An implanted pacemaker that is designed to permit its electrical output to be inhibited by the heart’s electrical impulses. This decreases the chances for the pacemaker to induce discomfort or dysrhythmias. An enduring synthetic cardiac pacemaker, a device that emits electrical signals to uphold a consistent heart rhythm, exclusively releases impulses when the heart rate…

A bony outgrowth of the root of a tooth.  

Ocular dysfunction present in Graves’ disease, including protrusion of the eyeball, exposure of the cornea, lid retraction, and occasion ally, optic neuropathy.  

Observation of an upright image in the ocular fundus.  

The soft tissue overlying the crown of a partially erupted tooth.  

The nursing manager or chief executive officer.  

A dental auxiliary trained to provide oral hygiene instruction and dental health care to school children. Formerly, the term applied to dental hygienists, but now it refers to persons trained according to a program developed in New Zealand.  

A column of gray matter lying at the base of the dorsal horn of the gray matter and extending from the seventh cervical to the third lumbar segments. These cells give rise to fibers of the dorsal spinocerebellar tract.  

A column of cells in the medulla oblongata lying lateral to the hypoglossal nucleus. It receives visceral afferent fibers.  

The nucleus in the medulla oblongata lying dorsal to the restiform body and receiving fibers from the cochlear nerve.