Category: S

An inability to describe or to find the way even though in familiar surroundings. This neurological condition is usually due to bilateral occipitoparietal lesions of the brain.  

The ability to perceive as separate points of contact the two blunt points of a compass when applied to the skin.  

Something that causes spasms or constrictions, such as in the bronchospasm associated with asthma.  

A tic of the muscles of the lower extremity, causing convulsive leaping upon attempting to stand.  

The use of one medicine in place of another, usually to prevent side effects from high doses of the first medicine (e.g., steroid-sparing).  

A substance destroyed by catabolism that decreases catabolic action on other substances.  

The process of breaking into very small parts. The term may be applied to gross structures or to atomic particles.  

A hollow tube that improves the delivery of inhaled aerosols, such as beta2 agonists, steroids, and other antiasthmatic drugs, to the bronchi and lungs. Spacers form a channel between metered dose inhalers and the mouth through which medicated mists can be inhaled. They improve the performance of antiasthmatic drugs because without them, a large quantity…

Device fashioned to keep teeth separated when placed across an edentulous segment of the dental arch. It may consist of bands, bars, springs, or other materials, and is cemented or soldered to orthodontic bands or crowns on the adjacent teeth. Within the realm of dentistry, there exists a remarkable dental device known as an orthodontic…

Triangular space immediately above the sternum between layers of deep cervical fascia.