NURS 3120 Chapter Notes - Chapter 15: Foramen Magnum, White Matter, Hypothalamus

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29 Mar 2017
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At the base of the skull in the occipital bone is a large oval opening terms the foramen magnum, through which the spinal cord extends from the medulla oblongata. Between the skull and the brain lie three layers termed meninges. Outer layer is a fibrous layer termed the dura mater. A two layer fibrous elastic membrane that covers the folds and fissures of the brain. Contains small vessels that supply blood to the brain. Csf is a colorless, odorless, fluid made in the choroid plexus of ventricles that contains glucose, electrolytes, oxygen, water, co2, protein, and leukocytes. Consists of the cerebrum, diencephalon, cerebellum, and brainstem. Made up of gray matter and white matter. Carotid artery supplies most of the blood to the brain and branch off into the posterior cerebral, middle cerebral, and anterior cerebral arteries. Remaining blood flows through two vertebral arteries and into the posterior and anterior communicating arteries that supply blood through the circle of willis.

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