The third cell corresponded to which ventricle?

The third cell corresponded to which ventricle?

• A. Fourth ventricle
• B. First ventricle
• C. Second ventricle
• D. Third ventricle

Answer: (A)

In the ventricular system, the ventricles are organized along the brain’s rostral-to-caudal axis. The third ventricle sits in the midline of the diencephalon, while the fourth ventricle lies in the hindbrain region, between the brainstem (pons/medulla) and the cerebellum. They are connected by the cerebral aqueduct, which runs from the third to the fourth ventricle. If a labeled “cell” in a diagram sits in the hindbrain area, near where the fourth ventricle is located, that position corresponds to the fourth ventricle. The first and second ventricles are within the cerebral hemispheres, far rostral to this region, and the third ventricle is nestled inside the diencephalon, not in the brainstem area. So the label in that posterior position best matches the fourth ventricle.

In the ventricular system, the ventricles are organized along the brain’s rostral-to-caudal axis. The third ventricle sits in the midline of the diencephalon, while the fourth ventricle lies in the hindbrain region, between the brainstem (pons/medulla) and the cerebellum. They are connected by the cerebral aqueduct, which runs from the third to the fourth ventricle.

If a labeled “cell” in a diagram sits in the hindbrain area, near where the fourth ventricle is located, that position corresponds to the fourth ventricle. The first and second ventricles are within the cerebral hemispheres, far rostral to this region, and the third ventricle is nestled inside the diencephalon, not in the brainstem area. So the label in that posterior position best matches the fourth ventricle.