NEET Zoology Neural Control And Coordination MCQs

A lesion in the substantia nigra leads to a deficiency in which neurotransmitter, contributing to the characteristic symptoms of Parkinson's disease?

Which part of the brain is primarily responsible for regulating the sleep-wake cycle and coordinating circadian rhythms?

Damage to Broca's area in the brain typically results in:

Which cranial nerve is responsible for carrying sensory information related to smell?

A person with a mutation in the gene encoding rhodopsin kinase experiences prolonged photobleaching after exposure to bright light. This is MOST likely due to:

Damage to the optic chiasm directly affects which visual field(s)?

An individual presents with difficulty seeing in dim light but normal color vision. Which photoreceptor cells and associated pigment are MOST likely affected?

A researcher is studying the accommodation reflex in the eye. Which of the following changes occur when shifting focus from a distant object to a near object?

A patient experiences blurry vision at all distances and reports seeing halos around lights. Which refractive error BEST explains these symptoms, and what lens type corrects it?

A mutation affecting the cGMP-gated $Na^+$ channels in rod cells would MOST directly impact which stage of the phototransduction cascade?