What does the fourth ventricle of the brain control?
The fourth ventricle contains cerebrospinal fluid. It has a diamond shape and is located in the upper portion of the medulla. The main function of this ventricle is to protect the human brain from trauma (via a cushioning effect) and to help form the central canal, which runs the length of the spinal cord.
What are the characteristics of the fourth ventricle?
The fourth ventricle extends from the cerebral aqueduct (aqueduct of Sylvius) to the obex, and is filled with cerebrospinal fluid (CSF). The fourth ventricle has a characteristic diamond shape in cross-sections of the human brain. It is located within the pons or in the upper part of the medulla oblongata.
What are the structures that form the 4th ventricle?
The superior roof of the fourth ventricle has thick neural structures, the superior cerebellar peduncles. The superior cerebellar peduncles are on the lateral wall of the superior part of the roof and are the continuation of the dentate nuclei. The dentate nuclei are located just above the superior pole of the tonsils.
Does the 4th ventricle produce CSF?
Cerebrospinal fluid (CSF) is secreted by the choroid plexuses, filling the ventricular system. CSF flows out of the fourth ventricle through the 3 apertures formed at the roof of the fourth ventricle by 12 weeks’ gestation.
Where does 4th ventricle drain?
central canal
The fourth ventricle is the most inferiorly located ventricle, draining directly into the central canal of the spinal cord. Superiorly, it connects to the third ventricle through a thin canal called the cerebral aqueduct of Sylvius.
Does the fourth ventricle produce CSF?
The dilation of the neural canal within the rhombencephalon forms the fourth ventricle. Cerebrospinal fluid (CSF) is secreted by the choroid plexuses, filling the ventricular system. CSF flows out of the fourth ventricle through the 3 apertures formed at the roof of the fourth ventricle by 12 weeks’ gestation.
What is 4th ventricle?
The fourth ventricle is the most inferiorly located ventricle, draining directly into the central canal of the spinal cord. It is surrounded anteriorly by the pons and medulla, posteriorly by the cerebellum, and inferiorly by the spinal canal and spinal cord.
What is the 4th ventricle of the brain called?
The floor of the fourth ventricle is named the rhomboid fossa. The lateral recess is an extension of the ventricle on the dorsal inferior cerebellar peduncle. Inferiorly, it extends into the central canal of medulla.
Where is the 4th ventricle of the brain located?
medulla oblongata
The fourth ventricle is a diamond-shaped cavity located posterior to the pons and upper medulla oblongata and anterior-inferior to the cerebellum. The superior cerebellar peduncles and the anterior and posterior medullary vela form the roof of the fourth ventricle.
What is 4th ventricular tumor?
Tumors of the fourth ventricle may present with signs and symptoms of increased intracranial pressure resulting from hydrocephalus (headache, nausea/vomiting, vertigo, diplopia, papilledema, etc.) or from direct mass effect on the cerebellar hemispheres, vermis, or brainstem (e.g., ataxia, gait abnormalities, dysmetria …