Tear gland: The gland that makes tears. An abnormality of the tear glands can impair the production of the tears and lead to dry eyes.Also called a lacrimal gland.ear gland: The gland that makes tears. An abnormality of the tear glands can impair the production of the tears and lead to dry eyes.
The four main causes of left axis deviation (LAD): 1  Left anterior fascicular block (LAFB): 2  Diagnostic criteria include: 3  Mean QRS axis from - 45 to - 90 (possibly. 4  A qR pattern in lead aVL, with the R-peak time, i.e., the onset of the Q wave to the peak of the R wave. 5  45 msec (slightly more than one small box wide).
If the function is odd, it will be symmetric about the origin. If neither is true, the function is neither even nor odd.  1 Symmetric about the y-axis means that the behavior of the graph on the left side of the y-axis perfectly mirrors or reflects the behavior of the graph on the right side of the y-axis.