Which one of the following postural reflexes/reaction requires intact coex?
Correct Answer: Optical righting reflex
Description: Posture is regulated or acquired by reflex redistribution of tone in various muscle groups. Magnet reaction, also known as positive suppoing reaction, is seen in the spinal animal; Centre - Spinal cord Tonic neck reflex is seen in the decerebrate animal;Center - Vestibular nuclei. Neck righting reflex is seen in the midbrain or thalamic animal. Center - Midbrain nuclei/red nucleus. Optical righting reflex ~ When a person is falling, the surrounding objects will be seen tilted; and, from this visual input the upright posture will be retained. Center - Visual coex. Thus, intact coex is required for this reaction. Postural Reflexes and their centres Reflexes Integrated in Stretch reflex Positive suppoing reaction Negative suppoing reaction Spinal cord Tonic labyrinthine and tonic neck reflexes Medulla Righting reflexes (except optical righting reflexes) Labyrinthine righting reflexes Neck righting reflexes Body on head righting reflexes Body on body righting reflexes Midbrain Conditioned reflex Optical righting reflexes Hopping and placing reaction Coex
Category:
Physiology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now