Shy-Drager syndrome A progressive disorder of the central and sympathetic nervous systems, also called multiple system atrophy with postural hypotension (an excessive drop in blood pressure when the patient stands up, causing dizziness or momentary blackouts). Symptoms of autonomic nervous system failure, such as constipation, impotence in men, and urinary incontinence, usually predominate early in…
shunt, ventriculopleural A shunt that is used to drain fluid from the cerebral ventricle into the chest cavity.
shunt, ventriculoperitoneal A shunt that is used to drain fluid from the cerebral ventricle into the abdomen.
shunt, ventriculoatrial A shunt that is used to drain fluid from the cerebral ventricle into the right atrium of the heart.
shunt 1 To move a body fluid, such as cerebrospinal fluid, from one place to another. 2 A vessel (tube) that is used as a passageway to transport fluid from one body area to another. For example, a spinal shunt carries cerebrospinal fluid from a ventricle in the brain to another area of the body….
Shulman syndrome See eosinophilic fasciitis.
shoulder joint The flexible ball-and-socket joint that is formed by the junction of the humerus and the scapula. The shoulder joint is cushioned by cartilage that covers the face of the glenoid socket and the head of the humerus. The joint is stabilized by a ring of fibrous cartilage (labrum) around the glenoid socket. Ligaments…
The shoulder blade, or scapula, is a large, flat, triangular bone located on the posterior side of the ribcage, on either side of the spine. It is one of the three main bones forming the shoulder girdle, connecting the clavicle (collarbone) to the humerus (upper arm bone) and forming part of the shoulder joint socket….
shoulder A structure that is made up of two main bones: the scapula (shoulder blade) and the humerus (the long bone of the upper arm). The end of the scapula, called the glenoid, is a socket into which the head of the humerus fits, forming a flexible ball-and-socket joint. The scapula is an unusually shaped…
shot, flu See influenza vaccine.
shot, allergy See allergy desensitization.
short arm of a chromosome See p arm of a chromosome.