VAGUS NERVE -The tenth cranial nerve, which is a mixed
nerve that has both motor and sensory function. The
long nerve in the anterior neck traveling with the carotid
artery; responsible for many organ functions in the
chest and abdomen.
VAGUS NERVE STIMULATION (VNS) - Therapy for epilepsy
which applies small electrical pulses to the vagus nerve
in the neck which regulates internal organs. This therapy
is used in patients suffering from partial epilepsy
who have failed traditional drug therapy.
VALVE - Device placed in a shunt system to regulate
the rate and direction of CSF flow.
VASCULAR - Relating to or containing blood vessels.
VASOCONSTRICTION - A decrease in the diameter of blood
VASODILATATION - An increase in the diameter of blood
VASOPRESSIN - A hormone secreted by the hypothalamus
and stored in the posterior pituitary which raises blood
pressure and increases reabsorption of water by the
VASOPRESSOR - An agent which constricts the arteries
and raises blood pressure.
VASOSPASM - Spasm of blood vessels, decreasing their
VENTRICLE - The cavities or chambers within the brain
which contain the cerebrospinal fluid. There are two
lateral ventricles and midline third and fourth ventricles.
VENTRICULITIS - Inflammation and/or infection of the
VENTRICULOGRAM - An X-ray study of the ventricles.
VENTRICULOSTOMY - An opening into the ventricles of
the brain, such as by inserting a small, thin, hollow
VENTRICULAR DRAINAGE - Insertion of a small tube into
the ventricles to drain cerebrospinal fluid, usually
when pressure is increased.
VENTRICULOSTOMY -The surgical opening in a ventricle
of the brain to drain cerebrospinal fluid, especially
VERMIS - Middle part of the cerebellum between the
VERMONT (KRAG) - Posteriorly placed internal fixation
VERTEBRA - One of the 33 bones of the spinal column.
A cervical, thoracic, or lumbar vertebra has a cylindrically-shaped
bony anteriorly and a neural arch posteriorly (composed
primarily of the laminae and pedicles as well as the
other structures in the posterior aspect of the vertebra)
that protects the spinal cord. The plural of vertebra
VERTEBRAL BODY - From a lateral view, it is the main
rectangular portion of the spine; from an overview,
VERTIGO - An abnormal sensation of rotation or movement
of one's self, or the environment.
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