Category: M

Comparison of the intake and excretion of a specific nutrient. The balance may be negative when an excess of the nutrient is excreted or positive when more is taken in than excreted.  

Auscultation in which sounds are conducted from the surface to the ear through an instrument such as a stethoscope.  

Recollection of a sound based on previous auditory impressions.  

The tendency of molecules with unlike electrical charges to attract each other.  

Muscular atrophy resulting from a lesion of the spinal cord.  

Atrophy of muscle tissue, especially due to lack of use or denervation. Muscle weakness and reduction in muscle tissue size can occur due to various factors. Muscular atrophy can stem from different sources such as injuries, inadequate nutrition, diminished use of a body part, deterioration of muscle cells, and conditions affecting the nerves that provide…

A neurological syndrome marked by Parkinson’s disease, autonomic failure (loss of sweating, urinary incontinence, dizziness or syncope on arising, miosis), and unsteady gait (ataxia).  

Congenital closure of the mitral valve opening between the left atrium and ventricle.  

Inability to perform coordinated muscle movements.  

A tumor of the brainstem, cerebellum, spinal cord, or the white matter of the cerebral hemispheres. Onset is typically in the fifth decade of life. Prognosis after treatment by surgery, radiation, or other means is poor; few survive more than 2 years.