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Nervous System

TermDefinition
Main Regions of the brain Cerebrum, diencephalon, cerebellum and brain stem
Cerebrum top, biggest part, thinking
Cerebral Hemispheres left and right halves of the brain
Corpus Callosum Fibers connecting both halves of the brain, c shaped structure
Fornix fiber tract linking limbic system regions
Longitudinal Fissure big divide of cerebral hemispheres
Gyrus raised bumpy grooves of cerebrum
Sulcus lower pit of cerebrum
Diencephalon made up of epithalamus, thalamus and hypothalamus
Thalamus bilateral egg shaped nuclei connected by interthalamic adhesion and forming superior wall of 3rd ventricle. relay station for info coming from cortex.
Hypothalamus forms floor of 3rd ventricle , cap over brainstem and 3rd ventricle. Visceral control center
Pineal Gland a pea-sized conical mass of tissue behind the third ventricle of the brain, secreting a hormone like substance in some mammals.
Pituitary Gland the major endocrine gland. A pea-sized body attached to the base of the brain, the pituitary is important in controlling growth and development and the functioning of the other endocrine glands.
Cerebellum "little brain" attach to the top of the brain stem. Components include vermis, arbor vitae, cortex, peduncles
Brain Stem Continuation of spinal cord. Contains medulla oblongata, pons and midbrain
Midbrain a small central part of the brainstem, developing from the middle of the primitive or embryonic brain.
Pons bulging brain stem region between midbrain and medulla.
Medulla Oblongata most inferior part of brain stem, eventually becomes spinal cord. Autonomic reflex center.
Cranial Nerve 1 or olfactory bulb neural structure of the vertebrate forebrain involved in olfaction, or the sense of smell. Flow of olfactory information from receptors to glomeruli layer
Cranial Nerve 2 or optic nerve each of the second pair of cranial nerves, transmitting impulses to the brain from the retina at the back of the eye.
Optic Chiasma the X-shaped structure formed at the point below the brain where the two optic nerves cross over each other
lateral ventricle 2 lateral ventricles. one in each cerebral hemisphere.
third ventricle formed from diencephalon. Superior to hypothalamus; lies between right/left halves of thalamus
fourth ventricle runs through brain stem (midbrain) and becomes the central canal of the spinal cord.
spinal cord attaches to the brain via brain stem. extends to lumbar vertebra. Housed in vertebral column, CSF runs through central canal.
meninges dura, arachnoid and pia mater
Created by: user-1773528
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