Question

In brain, lateral ventricle is connected to diocoel by
a. Foramen of Magendie
b. Foramen of Monro
c. Foramen of Luschka
d. Both (a) and (b)

Answer 1

Hint: In the brain, the ventricular system is a set of four interconnected cavities known as ventricles. The choroid plexus is a region within each ventricle which produces the circulating cerebrospinal fluid (CSF). The ventricular system is continuous and contains the spinal cord as a central canal from the fourth ventricle. These are lined by ependymal, a specialized form of epithelium cells.

Complete answer:
Now, let’s have a look at different ventricles of the brain.
• The ventricular system of the brain is a set of four interconnected ventricles in the brain, where the cerebrospinal fluid (CSF) is produced.
• The lateral ventricles are the two largest ventricles or cavities of the ventricular system of the human brain.
• Left or right ventricle is a part of the cerebral hemisphere.
• 1st and 2nd ventricles depict the lateral ventricle.
• The 3rd Ventricle is a narrow cavity known as diocoel above the hypothalamus at the midline and between the right and left halves of the thalamus.
• The function of the Foramen of Monro is to connect lateral ventricles with diocoel and due to this cerebrospinal fluid produced in the lateral ventricles reaches the third ventricle and then the rest of the brain's ventricular system.
• So, the correct option is that the lateral ventricle is connected to diocoel by the foramen of Monro (interventricular foramina).

Hence, the correct answer is option (B).

Additional information:
Some other important points-
> Foramen of magendie connects the fourth ventricle with the subarachnoid space via the cisterna magna. It is also termed as a median aperture.
> Foramen of Luschka- It connects the fourth ventricle to subarachnoid space via the cistern of the great cerebral vein. It is also known as the right and left lateral aperture.

Note: The lateral ventricles in the case of a fetus measure about ten mm each. It represents the normal size of the ventricles in the fetus. A condition may arise called ventriculomegaly in which the ventricles appear larger than the normal size.