Although tefillin is technically the plural form (the singular being tefillah), it is loosely used as a singular as well. The arm-tefillin, or shel yad, is placed on the upper arm, and the strap wrapped around the arm/hand, hand and fingers; while the head-tefillin, or shel rosh, is placed above the forehead.
Definition of declination. 1 : angular distance north or south from the celestial equator measured along a great circle passing through the celestial poles. 2 : a turning aside or swerving. 3 : deterioration moral declination. 4 : a bending downward : inclination.
Demyelination is the breakdown of the protective covering of the nerve fibers in the spinal cord and brain. This protective covering, called a myelin sheath, helps promote proper nerve function. Demyelination is a condition known as demyelinating disease.There are several causes of demyelination.Myelin, found in the insulating white matter around the nerves, is an important part of the nerves. During transmission of information, myelin has the responsibility of receiving and interpreting the messages sent from the brain.here are several causes of demyelination. Myelin, found in the insulating white matter around the nerves, is an important part of the nerves. During transmission of information, myelin has the responsibility of receiving and interpreting the messages sent from the brain.