How to use Ventricles in a sentence
When the ventricular pressure falls below the atrial pressure the AV valves open and blood begins to quickly fill the ventricles.
This causes the ventricles to contract forcing the blood to leave via the semi lunar valves to the arteries.
Becker (EVD) Drain In the brain injured patient, post neurosurgical patient, collection of blood within the brain ventricles can occur.
During this procedure the surgeon creates a small hole in one of the ventricles in the brain.
Cerebrospinal fluid-The clear, normally colorless fluid that fills the brain cavities (ventricles), the subarachnoid space around the brain, and the spinal cord and acts as a shock absorber.Advertisement
Ventricles of the brain-The spaces within the brain where cerebrospinal fluid is made.
When the heart beats, normally it makes two sounds, "lubb" when the valves between the atria and ventricles close, and "dupp" or "dub" when the valves between the ventricles and the major arteries close.
The most common types of septal defects are atrial septal defect, an opening between the two upper heart chambers (atria), and ventricular septal defect, an opening between the two lower heart chambers (ventricles).
Infants frequently have an abnormal electrocardiogram (ECG) that indicates that the right or both ventricles are enlarged, while in older children the ECG may be normal or show that the left ventricle is enlarged.
In hydrocephalus, excess CSF collects in the large sections of the brain called the ventricles.Advertisement
The major defects are a large hole (ventricular septal defect) between the ventricles, which allows oxygen-poor blood to mix with oxygen-rich blood, and narrowing at or beneath the pulmonary valve.
However, babies who survive the surgery appear to be 33 to 50 percent less likely to have hydrocephalus, a condition that requires surgically implanted tubes or shunts to remove fluid from the ventricles (cavities of the brain).
It is a condition in which immature and fragile blood vessels within the brain burst and bleed into the hollow chambers (ventricles) normally reserved for cerebrospinal fluid and into the tissue surrounding them.
However, more severe IVH can result in hydrocephalus, a potentially fatal condition in which too much fluid collects in the ventricles, exerting increased pressure on the brain and causing the baby's head to expand abnormally.
Intraventricular hemorrhage (IVH)-A condition in which fragile blood vessels within the brain burst and bleed into the hollow chambers (ventricles) of the brain and into the tissue surrounding them.Advertisement
Ventricular septal defect-An opening between the right and left ventricles of the heart.
The problem starts very early in the uterus with a narrowed pulmonary valve and a hole between the ventricles.
The blood that is supposed to start flowing through the lungs cannot easily get there because of the narrowed valve; however, the hole between the ventricles remains open.
Because of the opening between ventricles, much of the blood that comes back to the heart needing oxygen is sent out without being properly oxygenated.
The Dandy-Walker malformation is a brain defect marked by incomplete formation or absence of the central section of the cerebellum and the growth of cysts within the lowest of the brain's ventricles.Advertisement
The ventricles are fluid-filled cavities within the brain, through which cerebrospinal fluid (CSF) normally circulates.
Approximately 80-90 percent of children with Chiari malformation Type II also have hydrocephalus, a condition in which one or more of the ventricles becomes enlarged due to an accumulation of CSF.
The other complication is called intraventricular hemorrhage; this is bleeding into the cavities (ventricles) of the brain, which may be fatal.
Hydrocephalus is an abnormal expansion of cavities, called ventricles, within the brain, which is caused by an abnormally large accumulation of cerebrospinal fluid (CSF).
There are four ventricles in the human brain.Advertisement
Once formed, CSF circulates among all the ventricles before it is absorbed and returned to the circulatory system.
When the ventricles are obstructed, the CSF cannot circulate and be absorbed.
An elevated level of CSF in the brain leads to pressure within the ventricles.
Communicating hydrocephalus is the most common type and exists when one or more passages connecting the ventricles become blocked.
A shunt is a tube connecting the ventricles of the brain to an alternative drainage site, usually the abdominal cavity.Advertisement
In some cases of non-communicating hydrocephalus, a direct connection can be made between one of the ventricles and the subarachnoid space, allowing drainage without a shunt.
Choroid plexus-Specialized cells located in the ventricles of the brain that produce cerebrospinal fluid.
In a given case of anasarca due to a cause acting generally, it will be found that the liquid of the pleural cavity always contains the highest percentage of proteid, that of the peritoneal cavity comes next, that of the cerebral ventricles follows this, and the liquid of the subcutaneous areolar tissue contains the lowest.
The soul, located in the ventricles of the brain, is affected by the temperament of the individual; the dry temperament produces acute intelligence; the moist, memory; the hot, imagination.
The heart is practically quadrilocular, the right and left halves being completely partitioned, except for a small communication, the foramen Panizzae, between the right and left aortae where these cross each other on leaving their respective ventricles.Advertisement
The ventricles contained no more than about one fluid drachm of clear serum.
The condition of over- filled ventricles is called hydrocephalus.
Patients with schizophrenia often show a small increase in the size of the fluid spaces in the brain called the lateral ventricles.
This occurs in an area of the brain known as the ' germinal matrix ' adjacent to the cerebral ventricles.
The forebrain forms the bulk of the whole brain, but the large size of the hemispheres is due to the greater development of the basal and lateral portions (pedunculi cerebri and corpora striata), while the pallium (the portion external to the lateral ventricles) is thin, and restricted to the median side of each hemisphere.Advertisement