Anatomy & Physiology
1st Edition
ISBN: 9781938168130
Author: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher: OpenStax College
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Chapter 13, Problem 9ILQ
Watch this animation (http://openstaxcollege.org/l/CSFflow) that shows the flow of CSF through the brain and spinal cord, and how it originates from the ventricles and then spreads into the space within the meninges, where the fluids then move into the venous sinuses to return to the cardiovascular circulation. What are the structures that produce CSF and where are they found? How are the structures indicated in this animation?
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Please explain what cerebral spinal fluid (CSF) is, how it is made (structures involved); and discuss its complete circulation.
EXPLANATION ADDRESSING THE QUESTION ABOVE
Cerebral spinal fluid is a fluid that cushions the central nervous system and provides buoyancy to and helps nourish the brain. It circulates around the surface of the brain, interior ventricles, and surface of the spinal cord and central canal of the spinal cord. CSF is created by the ependymal cells in the choroid plexus and ventricles of the brain. CSF is made up mostly of water and also includes ions, nutrients like vitamin c and protein, and can pick up waste as it circulates. CSF circulation starts in the lateral ventricle where the choroid plexus and lateral ventricle creates or secretes the CSF. The CSF then flows through the ventricular foramen into the third ventricle. At the third ventricle, the CSF then flows through the cerebral aqueduct into the fourth ventricle. Then, the CSF exits the fourth…
Hydrocephalus occurs when CSF accumulates in the ventricles and passageways of the brain. Assuming that CSF production isnormal, propose reasons for the accumulation of the fluid.
You are trying to explain the ventricular system of the brain to your younger sister. You tell her the
following: Cerebrospinal fluid (CSF) is formed as a filtrate of blood at the level of a choroid plexus. It
passes through ependymal cells to the space between the arachnid mater and pia mater. Once it has
traveled around the periphery of the brain within this space between those two meninges, the CSF then
accumulates in the third ventricle. Once there, it passes to the fourth ventricle via the cerebral aqueduct
and then travels via the central canal to the spinal cord. It is finally reabsorbed by the arachnoid
granulations. The cerebrospinal fluid is turned over about three times every 24 hours. What error did you
make in this description?
Practice g• 6S:
The CSF travels from the third ventricle to the fourth ventricle via the cerebral aqueduct
When being formed it has to pass through ependymal cells
The CSF is reabsorbed by arachnoid granulations
The CSF travels from the subarachnoid…
Chapter 13 Solutions
Anatomy & Physiology
Ch. 13 - Watch this animation...Ch. 13 - Watch this video...Ch. 13 - Watch this video...Ch. 13 - Watch this video...Ch. 13 - Watch this video...Ch. 13 - Compared with the nearest evolutionary relative,...Ch. 13 - Watch this animation...Ch. 13 - Watch this video...Ch. 13 - Watch this animation...Ch. 13 - Figure 13.20 If you zoom in on the DRG, you can...
Ch. 13 - Figure 13.22 To what structures in a skeletal...Ch. 13 - Visit this site...Ch. 13 - Aside from the nervous system, which other organ...Ch. 13 - Which primary vesicle of the embryonic nervous...Ch. 13 - Which adult structure(s) arises from the...Ch. 13 - Which non-nervous tissue develops from the...Ch. 13 - Which structure is associated with the embryologic...Ch. 13 - Which lobe of the cerebral cortex is responsible...Ch. 13 - What region of the diencephalon coordinates...Ch. 13 - What level of the brain stem is the major input to...Ch. 13 - What region of the spinal cord contains motor...Ch. 13 - Brodmanns areas map different regions of the...Ch. 13 - What blood vessel enters the cranium to supply the...Ch. 13 - Which layer of the meninges surrounds and supports...Ch. 13 - What type of glial cell is responsible for...Ch. 13 - Which portion of the ventricular system is found...Ch. 13 - What condition causes a stroke? inflammation of...Ch. 13 - What type of ganglion contains neurons that...Ch. 13 - Which ganglion is responsible for cutaneous...Ch. 13 - What is the name for a bundle of axons within a...Ch. 13 - Which cranial nerve does not control functions in...Ch. 13 - Which of these structures is not under direct...Ch. 13 - Studying the embryonic development of the nervous...Ch. 13 - What happens in development that suggests that...Ch. 13 - Damage to specific regions of the cerebral cortex,...Ch. 13 - Why do the anatomical inputs to the cerebellum...Ch. 13 - Why can the circle of Willis maintain perfusion of...Ch. 13 - Meningitis is an inflammation of the meninges that...Ch. 13 - Why are ganglia and nerves not surrounded by...Ch. 13 - Testing for neurological function involves a...
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