The Brain and Cranial Nerves Spotlight Figure 14.4: Formation and Circulation of
ID: 3508184 • Letter: T
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The Brain and Cranial Nerves Spotlight Figure 14.4: Formation and Circulation of Cerebrospinal Fluid 17 of 25 Part B - Structures of CSF Production and Circulation Which cells are most directly associated with the formation of CSF? Match the term with the best description. View Available Hint(s) Reset Help choroid plexus ependymal cells arachnoid granulations subarachnoid space cerebrospinal fluid villi that absorb CSF into the venous circulation located in the ventricles of the brain; produces and maintains CSF space between the arachnoid mater and pia mater through which the CSF circulates around the brain and spinal cord clear, colorless fluid that transports nutrients and removes wastes from the central nervous system neuroglial cells most directly associated with the formation of CSF Submit Previous AnswersExplanation / Answer
CSF
The cerebrospinal fluid(CSF) is a modified tissue fluid. It is confined to the ventricles in the brain and the subarachnoid space around the brain and spinal cord. It replaces lymph in the CNS. The total quantity of it is about 150 ml, formed at a rate of about 200 ml per hour or 5000ml per day.The normal pressure of it being 60 -100mm of CSF or water.
The ependymal cells form the epithelial lining of the ventricles in the brain and spinal cord and the lining of the choroid plexus in the lateral ventricles.These cells surrounding the choroid plexus take part directly in the formation of CSF.
Functions: Its functions are protective, nutritive and transport of metabolites in the CNS.
It acts as a buffer/cushion and also protects the brain from shock/blow. It helps in the exchange of nutritive as well as waste materials between the blood and the brain tissues.
Answers:
Arachnoid granulations: villi that absorb the CSF into the venous circulation.
Choroid plexus: located in the ventricles of the brain; produces and maintains CSF.
Subarachnoid space: space between the arachnoid mater and pia mater through which the CSF circulates around the brain and the spinal cord.
Cerebrospinal fluid: Clear, colorless fluid that transports nutrients and removes wastes from the central nervous system.
Ependymal cells: neuroglial cells most directly associated with the formation of CSF.
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