What are the 3rd and 4th ventricles?

What are the 3rd and 4th ventricles?

The third ventricle is continuous caudally with the cerebral aqueduct, which runs though the midbrain. At its caudal end, the aqueduct opens into the fourth ventricle, a larger space in the dorsal pons and medulla. The fourth ventricle narrows caudally to form the central canal of the spinal cord.

What separates the 3rd and 4th ventricles?

The dilation of the neural canal within the rhombencephalon forms the fourth ventricle. The lateral ventricles communicate with the third ventricle through interventricular foramens, and the third ventricle communicates with the fourth ventricle through the cerebral aqueduct (see the image below).

What are the 4 ventricles lined with?

There are four ventricles of the brain: the 2 lateral ventricles, third ventricle, and fourth ventricle. The ventricles are lined with a specialised membrane called the choroid plexus, which is made up of ependymal cells.

Where is the 4th ventricle located?

brain stem
The fourth ventricle is a broad tent-shaped cerebrospinal fluid (CSF) cavity located behind the brain stem and in front of the cerebellum in the center of the posterior fossa (Fig. 31-1). CSF enters through the cerebral aqueduct, which opens into the fourth ventricle at its rostral end.

Which structure is called the lateral third and fourth?

CSF is produced mainly by a structure called the choroid plexus in the lateral, third and fourth ventricles. CSF flows from the lateral ventricle to the third ventricle through the interventricular foramen (also called the foramen of Monro).

Where is the 4th ventricle?

Where does the 4th ventricle drain?

the central canal of the spinal cord
The fourth ventricle is the most inferiorly located ventricle, draining directly into the central canal of the spinal cord.

How do you get rid of 4th ventricle tumors?

Surgery is the standard treatment for ependymoma of the fourth ventricle. It confirms the diagnosis, may relieve obstruction of spinal fluid flow, and may allow for total removal. 100% resection is common for ependymomas of the fourth ventricle.

Are there one or two foramen of Monro?

At the insular level, it is located deep to the central part of the second short insular gyrus. The thalamus is located at the center of the brain with the foramen of Monro at one end and the pineal gland at the other.

What is 4th ventricular tumor?

Fourth ventricle tumors, in particular, present a unique surgical challenge because of adjacent cranial nerve nuclei in the ventricle floor and the risk of injury to cerebellar peduncles and dentate nuclei in the ventricle roof. Additionally, each wall of the fourth ventricle has critical vascular relationships.