Ventricle, cerebral

Ventricle, cerebral
One of a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord. The four ventricles consist of the two lateral ventricles, the third ventricle and the fourth ventricle: {{}}Lateral ventricles: The lateral ventricles are in the cerebral hemispheres. Each lateral ventricle consists of a triangular central body and four horns. The lateral ventricles communicate with the third ventricle through what is called the interventricular foramen (opening). The third ventricle is a median (midline) cavity in the brain that is bounded by the thalamus and hypothalamus on either side. Anteriorly (in front) the third ventricle communicates with the lateral ventricles and posteriorly (in back) the third ventricle communicates with what is called the aqueduct of the midbrain (or the aqueduct of Sylvius). The fourth ventricle is the most inferior (lowest) of the four ventricles of the brain. It extends from the aqueduct of the midbrain to the central canal of the upper end of the spinal cord with which it communicates by the two foramina (openings) of Luschka and the foramen (opening) of Magendie. The ventricles are filled with cerebrospinal fluid, which is formed by structures called choroid plexuses located in the walls and roofs of the ventricles.

Medical dictionary. 2011.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • Cerebral shunt — Cerebral shunts are commonly used to treat hydrocephalus, the swelling of the brain due to excess buildup of cerebrospinal fluid (CSF). If left unchecked, the cerebral spinal fluid can build up leading to an increase in intracranial pressure… …   Wikipedia

  • Cerebral contusion — Classification and external resources CT scan showing cerebral contusions, hemorrhage within the hemispheres, subdural hematoma on the left, and skull fractures[1] …   Wikipedia

  • Ventricle — Ven tri*cle, n. [L. ventriculus the stomach, a ventricle, dim. of venter the belly: cf. F. ventricule. See {Ventral}.] 1. (Anat.) A cavity, or one of the cavities, of an organ, as of the larynx or the brain; specifically, the posterior chamber,… …   The Collaborative International Dictionary of English

  • cerebral aqueduct — n AQUEDUCT OF SYLVIUS * * * (aqueduct of Sylvius) the narrow channel, containing cerebrospinal fluid, that connects the third and fourth ventricle of the brain. * * * aqueductus mesencephali …   Medical dictionary

  • Ventricle — A ventricle is a chamber of an organ. For example, the four connected cavities (hollow spaces) in the central portion of the brain and the lower two chambers of the heart are called ventricles. * * * A normal cavity, as of the brain or heart. SYN …   Medical dictionary

  • Cerebral ventricle — One of a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord. The four ventricles consist of the two lateral ventricles, the third ventricle and the fourth ventricle: Lateral… …   Medical dictionary

  • Cerebral aqueduct — Brain: Cerebral aqueduct Section through superior colliculus showing path of oculomotor nerve …   Wikipedia

  • ventricle — n. 1) either of the two lower chambers of the heart, which have thick muscular walls. The left ventricle, which is thicker than the right, receives blood from the pulmonary vein via the left atrium and pumps it into the aorta. The right ventricle …   The new mediacal dictionary

  • Ventricle, brain — One of a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord. The four ventricles consist of the two lateral ventricles, the third ventricle and the fourth ventricle: Lateral… …   Medical dictionary

  • Ventricle, fourth — One cavity in a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord. The four ventricles consist of two lateral ventricles, the third ventricle and the fourth ventricle: Lateral… …   Medical dictionary

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”