Extra Pyramidal Tract (Basic Outline Concept)
- 1. Rubrospinal Tract • From Red Nucleus of Mid Brain. • Cross to opposite side in the Tegmentum of Mid Brain constituting the Ventral Tegmentum Decussation in Mid Brain. • Fibres descends through Pons & Medulla. • Enters the lateral white column of spinal cord. Medial Reticulospinal Tract • From Reticular formation in Pons. • Uncrossed. • Fibres descends to Cervical segment only. • Enters the Anterior White column of spinal cord. Lateral Reticulospinal Tract • From Reticular formation of Brain Stem. • Has both crossed and uncrossed fibres. • Fibres Descends to Thoracic segment. • Enters the Anterolateral White column of spinal cord. Olivospinal Tract • From the Inferior Olivary nucleus of Medulla Oblongata. • Enters the Anterolateral White Column of spinal cord. Vestibulospinal Tract • From Lateral Vestibular Nucleus of Ponto-Medullary junction. • Uncrossed. • Enters the Anterior White Column of spinal cord. Tectospinal Tract • From Tectum of Superior Colliculus of Mid Brain. • Fibres cross to opposite side forming Dorsal Tegmental Decussation in the Mid Brain. • Enters the Anterior White column of spinal cord.