Category: C

Heat transferred by conduction from a heat source to a colder object when the two materials are in contact with each other.  

Specialized myocytes in the heart that conduct the electrical impulses throughout the heart. In order of normal conduction, it consists of the sinoatrial node, the intra-atrial tracts, the  atrioventricular node, the bundle of His, the right and left bundle branches, and the Purkinje fibers.  

A headache that begins suddenly during coitus or immediately after orgasm. These are uncommon, occur more frequently in men than in women, and may last for minutes or hours.  

A headache that begins in the superior segments of the cervical spine and radiates to one side of the neck, forehead, and/or shoulder. It typically is worsened by movements or postures of the head or neck, or by pressure applied directly to the neck. It may be relieved by massage, manipulation, or occipital nerve blocks.…

Headache, usually mild to moderate in intensity, that begins as someone stops drinking coffee, tea, or other caffeinated drinks. This type of headache usually occurs only in persons who habitually consume more than 4 cups of caffeine daily and is often accompanied by fatigue and malaise.  

A handpiece with one or more bends so that the shaft of the rotary instrument is at an angle to the handpiece to reach less accessible areas of the mouth for dental work.  

An auditory hallucination in which a person hears a voice demanding that he or she engage in a specific (and often, a dangerous) behavior. Command hallucinations are characteristic of both schizophrenia and some forms of drug intoxication. Affected people may report receiving instructions to kill themselves or others; to comply or be punished; or to…

A large gyrus on the medial surface of the cerebral hemisphere that lies directly above the corpus callosum and arches over its anterior end.  

The groove on the lower internal border of a rib. It lodges the intercostal vessels and nerve.  

The groove encircling the external surface of the heart between the atria and the ventricles. Major coronary arteries and veins lie in the coronary groove.