Cerebrum is the anterior part of the brain in vertebrates, consisting of two hemispheres, left and right, separated by the corpus callosum. It is much folded due to the presence of ridges and grooves on its outer surface. Left hemisphere of the cerebrum controls right portion of the body and right hemisphere control left portion. Each hemisphere is internally hollow and two area are present in its wall. The outer area has cyton of nerve cells and due to grey in colour, it is called grey matter. The inner areas are made up of white axon fibres and that is called white matter. Cerebrum is responsible for the integration of complex sensory and neural functions and the initiation and coordination of voluntary activities in the body.

Match the parts of the brain given in column I with the functions performed by them given in column II and select the correct option from the codes given below. No. Part No. Function I The part forming the major part of the brain i Maintenance of balance and equilibrium II The part situated at the base of the thalamus ii Responsible for motor, sensory and intersensory associations III The part with a median lobe called the vermis iii Has centers for control of activities like respiration, gastric secretions, etc. IV The part which connects with the spinal cord iv Control of body temperature and the urge for eating and drinking

I - i i , I I - i v , I I I - i , I V - i i i

I - i i , I I - i i i . I I I - i v , I V - i i

I - i i i , I I - I , I I I - i i , I V - i v

I - i v , I I - i i , I I I - i i i , I V - i

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Cerebral cortex has no role in perception of the human body.

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Important Questions on Organisms

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Life Science>Systems>Organisms>Organisation in Human Body

Describe cerebrum.

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Life Science>Systems>Organisms>Organisation in Human Body

Write two functions of Cerebrum.

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Life Science>Systems>Organisms>Organisation in Human Body

Match the parts of the brain given in column I with the functions performed by them given in column II and select the correct option from the codes given below.

No.	Part	No.	Function
I	The part forming the major part of the brain	i	Maintenance of balance and equilibrium
II	The part situated at the base of the thalamus	ii	Responsible for motor, sensory and intersensory associations
III	The part with a median lobe called the vermis	iii	Has centers for control of activities like respiration, gastric secretions, etc.
IV	The part which connects with the spinal cord	iv	Control of body temperature and the urge for eating and drinking

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Life Science>Systems>Organisms>Organisation in Human Body

Match the column I (the parts of the human brain) with column II (the functions), and identify the correct choice from the given option.

	Column-I		Column- II
(A)	Cerebrum	(1)	Controls the pituitary
(B)	Cerebellum	(2)	Controls vision and hearing
(C)	Hypothalamus	(3)	Controls the rate of heart beat
(D)	Midbrain	(4)	Seat of intelligence
		(5)	Maintains body posture

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Life Science>Systems>Organisms>Organisation in Human Body

The inner parts of cerebral hemispheres and a group of associated deep structures like ____ $A$ ____ and ____ $B$ _____ form a complex structure called the limbic lobe or limbic system.

Choose the correct option for blanks $A$ and $B,$ respectively.

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Life Science>Systems>Organisms>Organisation in Human Body

Cerebrum is divisible into left and right cerebral hemispheres by a

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Life Science>Systems>Organisms>Organisation in Human Body

All sensory information to be registered consciously by the forebrain must pass via the

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Life Science>Systems>Organisms>Organisation in Human Body

Identify the incorrect statement about limbic system:

1)

Amygdala and hippocampus are deep structures in the inner part of the cerebral hemispheres. These complex structures are called the limbic lobe or limbic system.

2)

Limbic system along with the hypothalamus regulate sexual behaviour.

3)

It also regulates expression of emotional reactions such as excitement, pleasure, fear and motivation

4)

It also controls all voluntary and motor functions

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Life Science>Systems>Organisms>Organisation in Human Body

The peripheral nervous system is divided into two divisions called A and B. A relays impulses from the CNS to skeletal muscles while the B transmits impulses from the CNS to the involuntary organs and smooth muscles of the body. B is further classified into C and D neural system.

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Life Science>Systems>Organisms>Organisation in Human Body

Do you think it would be better if we had voluntary muscles in the stomach and involuntary muscles in the legs? Why/Why not?

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Life Science>Systems>Organisms>Organisation in Human Body

State the functions of Cerebral hemispheres.

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Life Science>Systems>Organisms>Organisation in Human Body

A neopallium or cerebral cortex is not found in the brain of :-

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Life Science>Systems>Organisms>Organisation in Human Body

Which is correct about human brain?

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Life Science>Systems>Organisms>Organisation in Human Body

Read the following five statements (i) to (v) regarding left cerebral hemisphere and select the option that correctly states the true (T) and false (F) statements.
(i) It receives most modalities of sensory information from the right side of the body.
(ii) It is usually larger than the right cerebral hemisphere.
(iii) It is the dominant cerebral hemisphere in most individuals.
(iv) It is connected to the right cerebral hemisphere by the corpus callosum.
(v) It contains the main areas for the understanding and production of speech in most individuals.