Question: 177 The parts of human brain that helps in regulation of sexual behaviour, expression of excitement, pleasure, rage, fear etc. are :
(1) Brain stem & epithalamus
(2) Corpus callosum and thalamus
(3) Limbic system & hypothalamus
(4) Corpora quadrigemina & hippocampus
Answer: Option (3)
Explanation:
The limbic system is a complex system of brain structures involved in emotional behaviour.
It plays a major role in the regulation of emotions such as pleasure, fear, rage and excitement.
The hypothalamus is closely associated with the limbic system and helps in regulating sexual behaviour, emotional responses and motivation.
Brain stem and epithalamus are mainly involved in reflex actions and endocrine regulation.
Corpus callosum connects the two cerebral hemispheres and thalamus acts as a relay station.
Corpora quadrigemina are involved in visual and auditory reflexes, while hippocampus is mainly associated with memory.
Therefore, regulation of sexual behaviour and emotions is carried out by the limbic system and hypothalamus.