VPB 121: Veterinary Physiology - II (2+1)

TECTO SPINAL TRACT

• Arises from the deep layers of rostral colliculus.
• It deccussates within the dorsal tegmentum.
• Descends caudally in the brain stem.
• In cat it descends contralaterally.
• Terminates in the rostral region of cervical spinal cord.
• Plays a major role in mediation of auditory and visual reflexes and modifies neck reflexes.
• There is always involvement of  Internuncial neuron between the tectospinal tract fibers and spinal alpha motor neurons.