Which is not an extrapyramidal tract?: (A) Reticulospinal tract, (B) Rubrospinal tract, (C) Coicospinal tract, (D) Tectospinal tract
Answer is C. The axons of neurons from the motor coex that project to spinal motor neurons forms the coicospinal tracts. The ventral coicospinal tract does not cross the midline until it reaches the level of the spinal cord at which it terminates. Lateral coicospinal tract neurons make monosynaptic connections to motor neurons, especially those concerned with skilled movements.Ref: Ganong's Review of Medical Physiology Twenty-Third Edition