Have the patient repeat this movement with the other foot. An inability to perform this motion in a relatively rapid cadence is abnormal. The heel to shin test is a measure of coordination and may be abnormal if there is loss of motor strength, proprioception or a cerebellar lesion. If motor and sensory systems are intact, an abnormal, asymmetric heel to shin test is highly suggestive of an ipsilateral cerebellar lesion.
Auxins promote stem elongation, inhibit growth of lateral buds (maintains apical dominance). They are produced in the stem, buds, and root tips. Example: Indole Acetic Acid (IA). Auxin is a plant hormone produced in the stem tip that promotes cell elongation.
Plant Hormones-AUXINS . Distribution . Though auxin is synthesized in the plant apices of shoots and roots, it is transported towards their respective basal parts. Quantitative estimation of auxins found in the segments of seedlings, by spectrophotometric analysis; show that stem apex possesses 1.5 to 2.0 fold higher amounts than found in the root apices.