fourth ventricle
noun
: a somewhat rhomboidal ventricle of the posterior part of the brain that connects at the front with the third ventricle through the aqueduct of Sylvius and at the back with the central canal of the spinal cord
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“Fourth ventricle.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/fourth%20ventricle. Accessed 26 Nov. 2024.
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