The mesencephalic duct, also known as the aqueduct of Silvius or the cerebral aqueduct, contains cerebrospinal fluid (CSF), is within the mesencephalon (or midbrain) and connects the third ventricle in the thalamus (or diencephalon) to the fourth ventricle, which is between the pons and cerebellum. Cerebrospinal fluid, CSF in short, is the clear fluid that occupies the subarachnoid space (the space between the skull and cortex of the brain). ... In biological anatomy, the mesencephalon (or midbrain) is the middle of three vesicles that arise from the neural tube that forms the brain of developing animals. ... The third ventricle is one of the four connected fluid-filled cavities within the human brain. ... For other uses, see Thalamus Ltd. ... The fourth ventricle is one of the four connected fluid-filled cavities within the human brain. ... The pons is a knob on the brain stem. ... Cerebellum (in blue) of the human brain General Features Location: It is found at the bottom rear of the head (the hindbrain), directly above the brainstem. ...
A blockage in this duct is a cause of hydrocephalus. Hydrocephalus (water-head, in Greek) is the abnormal accumulation of cerebrospinal fluid in the ventricles of the brain. ...
The inferior or chief nucleus is situated in the upper part of the pons, close to its dorsal surface, and along the line of the lateral margin of the rhomboid fossa.
The fibers from the superior nucleus constitute the mesencephalic root: they descend through the mid-brain, and, entering the pons, join with the fibers from the lower nucleus, and the motor root, thus formed, passes forward through the pons to its point of emergence.
The branch of communication from the lingual to the forepart of the ganglion is by some regarded as a branch of distribution, through which filaments pass from the ganglion to the lingual nerve, and by it are conveyed to the sublingual gland and the tongue.
canaliculi: Microscopic passageways between cells; bile canaliculi carry bile to bile ducts in the liver; in bone, canaliculi permit the diffusion of nutrients and wastes to and from osteocytes.
common bile duct: The duct formed by the union of the cystic duct from the gallbladder and the bile ducts from the liver; terminates at the duodenal ampulla, where it meets the pancreatic duct.
cystic duct: A duct that carries bile between the gallbladder and the common bile duct.
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