The Brain And Meninges Of The Brain

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The Brain Meninges – connective tissue covering the brain Dura mater – the substance that covers the brain and the spinal cord • Endosteal layer – resembles the periosteum of bones, provides blood vessels • Meningeal layer – dense, fibrous membrane • Falx cerebri – a large crescent shaped fold that is amid cerebral hemispheres • Tentorium cerebelli – horizontal large crescent crease attached to the internal surface of the occipital bone • Falx cerebelli - a fold that divides the cerebellar hemispheres and is attached internally to the occipital bone and is small and crescent shaped • Subdural space – an area between the dura mater and the arachnoid mater that is filled with fluid Arachnoid mater – a shielding membrane that covers the brain • Subarachnoid space – area between the pia mater and the arachnoid mater • Cerebrospinal fluid – clear fluid found in brain and spinal cord Pia mater – fragile, innermost layer of meninges Telencephalon – the cerebrum arises from here • Cerebral hemispheres - the divided regions of the brain Diencephalon – sensory information; has the three subsequent parts • Thalamus – sensory information to the cortex • Hypothalamus – master system for endocrine system and releases or inhibits hormones to be in charge of the pituitary gland • Third ventricle – a hollow space filled with cerebrospinal fluid; produces the cerebrospinal fluid Mesencephalon – concerned with vision, hearing and motor functions • Cerebral peduncles – makes of the front sides of the midbrain • Corpora quadrigemina - two groups of colliculi with white matter on the outside and gray matter on the inside • Mesencephalic aqueduct – contains CSF and joint the third and fourth ventricles Metencephalon – is composed of the three... ... middle of paper ... ..., for hearing and balance • Glossopharyngeal (IX) – posterior cranial fossa and neck, jugular foramen, allows for taste from the back third region of the tongue and general sensations like general sensations from the middle ear • Vagus (X) – jugular foramen; motor functions and general functions; controls muscles of the hard palate; provides sensation for thoracic and abdominal viscera • Accessory (XI) – jugular foramen and foramen magnum; motor functions, distribute muscles of the hard palate and connects to the spinal cord • Hypoglossal (XII) – neck, oral cavity, posterior cranial fossa, hypoglossal canal, gives nerves to most of the tongue muscles and motor skills Sources: APR McGraw- Hill Connect

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