(B) The cerebral aqueduct,also known as the aqueduct of Sylvius,is a narrow channel located within the midbrain. It connects the third ventricle of th

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Third and fourth ventricles of the brain

(B) The cerebral aqueduct,also known as the aqueduct of Sylvius,is a narrow channel located within the midbrain. It connects the third ventricle of the brain to the fourth ventricle. This pathway allows for the circulation of cerebrospinal fluid $(CSF)$ between these ventricles.

Class 11 Biology Neural Control and Coordination Central Neural System

Easy

What does the cerebral aqueduct (aqueduct of Sylvius) connect?

A
Bone marrow
B
Third and fourth ventricles of the brain
C
Middle ventricle and fourth ventricle
D
Haversian canal

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Neural Control and Coordination

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Central Neural System

In rabbits,which part of the brain is responsible for controlling vision?

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Match the following human spinal nerves in column-$I$ with the number of pairs in column-$II$ and choose the correct option.

Column-$I$ Column-$II$

$(a)$ Cervical nerves $(i) \; 5$ pairs

$(b)$ Thoracic nerves $(ii) \; 1$ pair

$(c)$ Lumbar nerves $(iii) \; 12$ pairs

$(d)$ Coccygeal nerves $(iv) \; 8$ pairs

Column-$I$	Column-$II$
$(a)$ Cervical nerves	$(i) \; 5$ pairs
$(b)$ Thoracic nerves	$(ii) \; 1$ pair
$(c)$ Lumbar nerves	$(iii) \; 12$ pairs
$(d)$ Coccygeal nerves	$(iv) \; 8$ pairs