Biology, asked by mahira887, 1 year ago

short note on forebrain

Answers

Answered by Anonymous
4
Hello Mate,


The forebrain is the largest part of the brain, most of which is cerebrum. Other important structures found in the forebrain include the thalamus , the hypothalamus and the limbic system....
The forebrain separates into the diencephalon (composed of the thalamus, hypothalamus, subthalamus, epithalamus and pretectum) and the telencephalon which develops into the cerebrum. The cerebrum itself consists of the cerebral cortex, with its underlying white matter, and the basal ganglia......The brain is made of three main parts: the forebrain, midbrain, and hindbrain. The forebrain consists of the cerebrum, thalamus, and hypothalamus (part of the limbic system). The midbrain consists of the tectum and tegmentum. The hindbrain is made of the cerebellum, pons and medulla.....


Hope this helps you
Answered by Anonymous
3

Heya...

Here's your answer.........



Forebrain


It is the main thinking part of the brain. It consists of cerebrum, thalamus, and hypothalamus.


(i) Cerebrum:


Cerebrum is the largest part of the brain and constitutes about four (fifth of its weight. Cerebrum is divided into two cerebral hemispheres by a deep longitudinal cerebral fissure. These hemispheres are joined by a tract of nerve fibres known as corpus callosum. The cerebral hemispheres are covered by a layer of cells known as cerebral cortex or grey matter. Cerebrum has sensory regions known as association areas that receive sensory impulses from various receptors as well as from motor regions that control the movement of various muscles. The innermost part of cerebrum gives an opaque white appearance to the layer and is known as the white matter.


(ii) Thalamus:


Thalamus is the main centre of coordination for sensory and motor signalling. It is wrapped by cerebrum.


(iii) Hypothalamus:


It lies at the base of thalamus and contains a number of centres that regulate body temperature and the urge for eating and drinking. Some regions of cerebrum, along with hypothalamus, are involved in the regulation of sexual behaviour and expression of emotional reactions such as excitement, pleasure, fear, etc.




Thanks...!!!

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Sorry baby 'wink'

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