What is the function of the ventricular system of the brain?
The ventricular system of the brain functions to provide support to surrounding tissues with cerebrospinal fluid (CSF), produced in the choroid plexus tissue lining many of the ventricles.
What is the function of the choroid plexus?
The choroid plexus (ChP) is a secretory tissue found in each of the brain ventricles, the main function of which is to produce cerebrospinal fluid (CSF).
Where is CSF reabsorbed?
The CSF from the subarachnoid space is eventually reabsorbed through outpouchings into the superior sagittal sinus (SSS) known as the arachnoid granulations. Arachnoid granulations act as an avenue for CSF reabsorption into the blood circulation through a pressure-dependent gradient.
What is the cerebral aqueduct?
The cerebral aqueduct is a narrow 15 mm conduit that allows for cerebrospinal fluid (CSF) to flow between the third ventricle and the fourth ventricle.
Where are the 4 ventricles of the brain located?
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.
Where does the choroid plexus secrete CSF?
C. Each of the choroid plexuses secretes CSF into the respective brain ventricle (Figures 1 and 3). Once in the ventricle, the CSF is in contact with the ependymal epithelium, which lines the ventricles and constitutes a leaky barrier between the ventricle and the brain interior.
Where is CSF found?
CSF is secreted by the CPs located within the ventricles of the brain, with the two lateral ventricles being the primary producers. CSF flows throughout the ventricular system unidirectionally in a rostral to caudal manner.
What is CSF circulation?
Circulation of cerebrospinal fluid (CSF) is a clear, colorless liquid that circulates between the ventricular system and the subarachnoid space. In addition to its function as a natural cushion for the brain, CSF provides the circulation of metabolic products, hormones, and neurotransmitters.
Why is CSF reabsorbed?
CSF reabsorption They act as one-way valves allowing the passage of CSF into the sinuses but prevent blood entering the subarachnoid spaces. The majority of reabsorption is into the superior sagittal sinus although some absorption occurs into nerve sheaths and neural lymphatic vessels.
What is the function of the aqueduct of Sylvius?
The aqueduct of Sylvius is a channel that connects the third ventricle with the fourth ventricle and allows cerebrospinal fluid to pass between them.
What is the cerebral aqueduct made of?
The neural canal dilates within the prosencephalon, leading to the formation of the lateral ventricles and third ventricle. The cavity of the mesencephalon forms the cerebral aqueduct. The dilation of the neural canal within the rhombencephalon forms the fourth ventricle.
What is the ventricular system of the brain?
Ventricular system. The ventricular system is a set of four interconnected cavities (ventricles) in the brain, where the cerebrospinal fluid (CSF) is produced. Within each ventricle is a region of choroid plexus, a network of ependymal cells involved in the production of CSF. The ventricular system is continuous with the central canal…
What are the lateral ventricles of the brain?
The lateral ventricles are collectively the largest ventricular space in the brain. There is one per hemisphere, both home to the cerebral cortex, basal ganglia, hippocampus, olfactory bulb, and basal forebrain. These ventricles are C-shaped and can be found within the cerebrum, of course, and surrounded by the basal ganglia and corpus callosum.
What are the diseases of the ventricular system?
Other diseases of the ventricular system include inflammation of the membranes (meningitis) or of the ventricles (ventriculitis) caused by infection or the introduction of blood following trauma or haemorrhage (cerebral haemorrhage or subarachnoid haemorrhage).
What is the development of the ventricles?
Development. As these sections develop around the neural canal, the inner neural canal becomes known as primitive ventricles. These form the ventricular system of the brain: The neural stem cells of the developing brain, principally radial glial cells, line the developing ventricular system in a transient zone called the ventricular zone.