This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neural Tracts, Subject name: Physiology
Descending motor tract responsible for rapid skilled movements. 
Select and explain. 
A. Anterior corticospinal tract, B. Rubrospinal tract, C. Vestibulospinal tract, D. Reticulospinal tract
B: Rubrospinal tract
Answer: B: Rubrospinal tract 
Explanation: Ans. is 'b' i.e., Rubrospinal tract o Pyramidal (corticospinal) tract and extrapyramidal tracts concerned with the muscles of the trunk and proximal portion of limbs (Le., the muscle mainly concerned with the postural control) occupy anterior white column of spinal cord and terminate in the medial ventral horn on the medial group of intemeurons. These tracts are collectively called medial pathways. Medial pathways include ventral (anterior) corticospinal tract, vestibulospinal tracts, reticulospinal tract and rubrospinal tract.o On the other hand, descending tracts concerned with distal muscles of the limb (i.e., those muscles which mediate fine skilled movements(A1 13)) occupy lateral white column and are called lateral pathways. Lateral pathways include lateral corticospinal tract and rubrospinal tracts.