This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Physiology
[{'content': 'Midbrain is the centre for integration of which of the following reflex \nSelect and explain. \nA. Vestibular righting reflex, B. Optical righting reflex, C. Magnet reaction, D. Hoping & placing reaction', 'role': 'user'}, {'content': "Answer: A \nExplanation: (A) Vestibular righting reflex > Centers for reflexes maintaining the posture are Medulla: Tonic labyrinthine reflex, tonic neck reflex, decerebrate rigidity Midbrain: Righting reflex, grasp reflex, vestibular pacing reaction Cortex: Decorticate rigidity, hopping & pacing reaction# Righting Reflexes:> Righting reflexes operate to maintain the normal standing position and keep an animal's head upright.> These reflexes are a series of responses integrated for the msot part in the nuclei of the midbrain.> When the midbrain animal is held by its body and tipped from side to side, the head stays level in response to the labyrinthine righting reflexes.", 'role': 'assistant'}]