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Brainstem continuation of the spinal cord; consists of the medulla oblongata, pons and midbrain Medulla Oblongata extends from the foramen magnum to the medulla pons and transmits all sensory and motor impulses Diencephalon Portions of the brain that contains the thalamus and hypothalamus Internal Jugular Vein return blood from the brain Midbrain extends from the pons to the diencephalon and contains bundles of sensory and motor nerve tracts Vermis Connects the two hemispheres of the cerebellum Cerebellum located posterior to the brain stem, 2nd largest part of the brain Tentorium Cerebelli seperates the cerebrum from the cerebellum Cerebrum the largest part of brain supported on the brain stem and diencephalon Internal Carotid and Vetebral Arteries carries the majority of the blood to the brain Cerebral Aqueduct The structure that carries CSF through the midbrain Arbor Vitae The term for the cerebellar white matter Pons Region of brain that contains centers that regulate depth and breathing Lateral The ventricle that is found in the cerebral hemispheres ectoderm what do the brain and spinal cord develop from diencephalon located superior to the brain stem, gives rise to thalamus, hypothalamus and epithalumus Falx cerebri seperates the two cerebral hemispheres Falx cerebelli seperates the two cerebellar hemispheres 20% how much of the oxygen and glucose does the brain consume even at rest Blood-brain barrier protects brain from harmful substances and pathogens Cerebrospinal fluid clear fluid that protects the brain and cord from chemical and physical injury 3rd ventricle found in the diencephalon 4th ventricle found in the brain stem and cerebellum brainstem found between the spinal cord and the diencephalon Medulla oblongata, Pons Midbrain three main parts of the brainstem (inf.-sup.) pyramids bulges on the anterior side of the stem formed by white matter cardiac center controls the rate and force of the heart and diameter of the BV medullary respiratory center regulates the rhythm of breathing Pons rounded bulge on the underside of the brain stem, connects the midbrain and MO Superior colliculi coordinates movements of the head, neck and trunk in response to visual stimulation inferior colliculi coordinates movements of the head neck and trunk in response to the auditory stimulation substantia nigra produces dopamine reticular formation gray and white matter extending throughout brain stem. Decreased activity = sleep and increased activity = wakefulness smooths and coordinates voluntary movements, regulates posture and balance functions of the Cerebellum