Any stimulus or event that makes a person seek or receive medical attention, such as a symptom, a physical finding,...

A narrowing of the spinal canal caused by degenerative or traumatic changes at the level of the lumbar vertebrae. This...

A starlike structure developing in the lens of the eye as a result of unequal growth of lens fibers.  

The largest angle from vertical that can be reached and maintained before balance is lost. In normal adults, the sagittal...

A splint of perforated metal extending from below the elbow to the end of the palm; shaped to fit the...

A distensible lung interstitial tissue surrounding the acinus and terminal bronchioles.  

The slope of the crest of the mandibular residual ridge from the third molar forward as viewed in profile.  

A pathway for lymph through a lymph node.  

Holding a clenched fist over the sternum, a characteristic gesture that individuals experiencing anginal chest pain use frequently.  

The passage of blood from the left side of the heart to the right side through an abnormal opening (e.g.,...