Question

Read the following statements.
(A) Optic lobes in humans are represented by two inferior colliculi of midbrain.
(B) Destruction of GABA secreting neurons leads to Parkinson’s while Huntington's chorea is caused due to degeneration of dopamine secreting neurons.
(C) Human brain is greatly convoluted, consisting of numerous gyri and sulci.
(D) Amygdala is concerned with regulating moods, especially anger and rage.
Choose the correct option w.r.t. true (T) and false (F).

• A. A-(T), B-(T), C-(T), D-(F)
• B. A-(T), B-(F), C-(F), D-(T)
• C. A-(F), B-(F), C-(T), D-(T)
• D. A-(F), B-(T), C-(F), D-(T)

Answer 1

The correct option is C A-(F), B-(F), C-(T), D-(T)

1. Optic lobes in humans are represented by a pair of superior colliculi of midbrain which control visual reflexes.
2. Destruction of GABA secreting neurons causes Huntington’s Chorea (distorted movements and dementia) while degeneration of dopamine secreting neurons causes Parkinson’s (tremors and shaking of limbs).
3. Convolutions of the cerebral cortex in the form of sulci (shallow grooves), fissures (deep grooves) and gyri (elevations or bulges) greatly enlarge the surface area of cortex.
4. Amygdala is a part of the limbic system; it is almond shaped and controls moods, especially anger and rage.