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Regions of the Brain Cerebral hemispheres Diencephalon Cerebellum Brain stem روند تکامل و تقسیم بندی سیستم عصبی
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The basic components of the CNS include the: Cerebrum Diencephalon Cerebellum Brain stem Spinal cord 2 بررسی ساختار ساقه مغز
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بررسی ساختار پل مغز و مدولا
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Functions Cranial nerve nuclei: sensory, motor, autonomic functions in head and neck Reticular formation: consciousness Long fiber tracts بررسی عملکرد ساقه مغز
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Balance بررسی عملکرد مخچه
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Motor Skill بررسی عملکرد مخچه
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AtaxiaTremor
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بررسی ساختار مدولا، پل مغز و مخچه
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Midbrain Mostly composed of tracts of nerve fibers Reflex centers for vision and hearing Cerebral aqueduct Substantioa nigra بررسی ساختار مغز میانی
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Cranial Nerves
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1 2 3 4 III VI V VII VIII 5 IXIX XI XII
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IV 1 2 3 4 5 6 7 8 9 10
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Cranial Nerve 1: Olfactory Nerve Anosmia Patients complain of loss of taste. Head injury is a common cause.
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Cranial Nerve II: Optic Nerve
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Cranial Nerves III, IV, VI: Oculomotor, Trochlear, Abducens Trochlear Nucleus in midbrain Nerve exits dorsal surface Moves eye Oculomotor Nucleus in midbrain Innervates 4 extraocular muscles and functions in most eye movements Contains parasympathetic which innervates pupillary constrictor muscles Abducens Nucleus in pons Moves eye
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Trigeminal ganglion Ophthalmic, maxillary and mandibular divisions Sensory: Touch, pain, temp, proprioception for face, mouth, anterior 2/3 of tongue, nasal sinuses. Motor: Muscles of chewing Cranial Nerve V: Trigeminal Nerve
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Motor function: muscles of facial expression. Parasympathetic function: innervation of lacrimal glands and some salivary gland. Visceral sensory function: taste from anterior 2/3 of tongue Cranial Nerve VII: Facial Nerve
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Vestibular and Cochlear Sensory Organs
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Motor function: stylopharyngeus muscle which elevates pharynx during talking and swallowing and participates in gag reflex. Parasympathetic function: innervation of parotid salivary gland. Visceral sensory function: taste from posterior1/3 of tongue Cranial Nerve IX: Glossopharyngeal Nerve
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Motor function: pharyngeal muscles (swallowing) & laryngeal muscles (vocalization) Parasympathetic function: innervation of heart, lungs, most if digestive tract. Somatic sensation function: sensation from pharynx, meninges, external auditory meatus. Cranial Nerve X: Vagus Nerve
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Cranial Nerve XI: Spinal Accessory Nerve Motor : sternocleidomastoid and trapezius muscles
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Motor function: intrinsic and extrinsic tongue muscles. Cranial Nerve XII: Hypoglossal Nerve
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