Question

write the functions of forebrain in detail

Answer 1

It controls body temperature, reproductive functions, eating, sleeping, and any display of emotions. At the five-vesicle stage, the forebrainseparates into the diencephalon (thalamus, hypothalamus, subthalamus, epithalamus, and pretectum) and the telencephalonwhich develops into the cerebrum.

Answer 2

Answer:

• The forebrain consists of cerebrum, thalamus and hypothalamus. Cerebrum forms the major part of the human brain.
• A deep cleft divides the cerebrum longitudinally into two halves, which are termed as the left and right cerebral hemispheres.
• The hemispheres are connected by a tract of nerve fibres called corpus callosum.
• The layer of cells that covers the cerebral hemispheres is called cerebral cortex.
• The cerebral cortex contains motor areas, sensory areas and large regions that are neither clearly sensory nor motor in function.
• These regions called as the association areas are responsible for complex functions like inter-sensory associations, memory and communication.
• The cerebrum wraps around a structure called thalamus, which is a major coordinating centre for sensory and motor signalling.
• Another very important part of the brain called hypothalamus lies at the base of the thalamus.
• The hypothalamus contains a number of centres which control body temperature, urge for eating and drinking.

• It also contains several groups of neurosecretory cells, which secrete hormones called hypothalamic hormones.
• The limbic system is also the part of forebrain.
• Along with the hypothalamus, the limbic system is involved in the regulation of sexual behaviour, expression of emotional reactions like excitement, pleasure, rage and fear.