Junction of the anterior, occipital and temporal horns of the lateral ventricle is known as?

• A. Atrium of lateral ventricle
• B. Foramen of Monro
• C. Third ventricle
• D. Interventricular foramen

Answer: (A)

The junction where the anterior (frontal), occipital, and temporal horns of the lateral ventricle meet is called the atrium, or trigone, of the lateral ventricle. This central area is formed as the different horns converge and is a key landmark within the lateral ventricle.

The foramen of Monro (interventricular foramen) is the opening that connects the lateral ventricle to the third ventricle, so it’s not the horn junction. The third ventricle is a separate midline cavity between the thalami, not the meeting point of the lateral ventricle horns. The term foramen of Monro and “interventricular foramen” refer to the same connection to the third ventricle, not the horn junction within the lateral ventricle.