Circulation Of Cerebrospinal Fluid Diagram
The solid arrows in the draw ing below cerebrospinal fluid csf circulatory pathway show the major pathway of csf flow.
Circulation of cerebrospinal fluid diagram. Learn vocabulary terms and more with flashcards games and other study tools. Since the total volume of csf averages around 150 270 ml this means that the entire volume of csf is replaced around 4 times per day. Csf is formed within the ventricles by small delicate tufts of spe cialized tissue called the choroid plexus. Start studying circulation of cerebrospinal fluid csf.
B which of the labeled structures carries exclusively sensory information towards the spinal cord. This condition called hydrocephalus may result from congenital stenosis or narrowing of the aqueduct of sylvius tumours meningitis or blood accumulating within the ventricles. Cerebrospinal fluid circulation begins with the pulsing of the choroid plexus. Which of the labeled cells in the diagram is a neuroglial cell that produces and assists in the circulation of cerebrospinal fluid.
The pathway of the cerebrospinal fluid is as follows. Introduction 00 18 csf. Tiny cilia located on ependymal cells that also produce small amounts of csf help propel the fluid along. Use the chapter headings below to navigate to relevant sections of the video.
Cerebrospinal fluid csf is a clear colorless body fluid found in the brain and spinal cord it is produced by specialised ependymal cells in the choroid plexuses of the ventricles of the brain and absorbed in the arachnoid granulations there is about 125 ml of csf at any one time and about 500 ml is generated every day. A video showing the flow of csf through the ventricular system and the sub arachnoid space. Both a and b. The choroid plexus in the four ventricles produce csf which is circulated through the ventricular system and then enters the subarachnoid space through the median and lateral apertures.
Figure 14 2 5 cerebrospinal fluid circulation. Accumulation of cerebrospinal fluid causes massive enlargement of the. Cerebrospinal fluid is constantly produced at a secretion rate of 0 2 0 7 ml min meaning that there is 600 700 ml of newly produced csf per day. The circulation of cerebrospinal fluid may be obstructed so that it accumulates in the skull.
Beginning in the lateral ventricles csf flows through two passageways into the third ventricle.