Question

Amygdala and hippocampus are components of

	a.	Visual association area
	b.	Precentral gyrus
	c.	Mesencephalon
	d.	Limbic system
	e.	Reticular activating system (Reticular formation)

Answer 1

Answer - d) Limbic system

• limbic system/rhinencephalon is a ring in the forebrain structures that surround the brain stem and are interconnected by an intricate neuronal pathway.
• it includes portions of lobes of the cerebral cortex, basal nuclei, thalamus, hypothalamus, hippocampus, amygdala, and cingulate gyrus.
• this complex is associated with emotions, basic survival and sociosexual behavior patterns, motivation and learning, and also visceral functions.
• amygdala is the window of the limbic system as it receives input signals from all the limbic system. it is concerned with emotional memories.
• the hippocampus is the area of memory processing.
• So the answer is the limbic system.
• visual association area is the occipital lobe, they are having functions related to vision, not memory and emotions, so not the answer.
• precentral gyrus s present in front of central sulci which divides the frontal and parietal lobe. no function with memory, so not the answer.
• mesencephalon is the midbrain part but the hippocampus and amygdala belongs to rhinencephalon. so not the answer.
• reticular formation is associated with the brain stem, not these limbic systems, hence not the answer.