Ocular Anatomy of Tapetum Lucidum: The Tapetum Lucidum is situated in the dorsal region of the vascular tunic (Choroid), directly behind the retina.
Function: Acts as a biological retroreflector, bouncing unabsorbed photons back through photoreceptor rods to enhance visual sensitivity in dim/nocturnal lighting conditions.
Correct option: (2) Choroid
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ICAR JRF Veterinary Physiology 29 Jun 2024Shift 1
MCQ (Single Correct)+4−1
Which one of the following is also knwon as error correcting device of brain goal-directed movements?
The Cerebellum as a Motor Error-Correcting Device: The Cerebellum is physiologically termed the 'comparator' or 'error-correcting device' of the brain for coordinated, goal-directed voluntary movements.
Mechanism: It receives 'efference copy' intentions from the motor cortex via corticopontocerebellar pathways and real-time sensory feedback from peripheral muscle spindles and Golgi tendon organs via spinocerebellar tracts, computing and correcting trajectory errors mid-motion.
Correct option: (4) Cerebellum
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