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).
The left bundle branch block can be further sub classified into: 1  Left anterior fascicular block. In this case only the anterior half of the left bundle branch (fascicle) is involved. 2  Left posterior fascicular block. Only the posterior part of the left bundle branch is involved.