SCLERA
\sklˈi͡ər], \sklˈiər], \s_k_l_ˈiə_r]\
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The white, opaque, fibrous, outer tunic of the eyeball, covering it entirely excepting the segment covered anteriorly by the cornea. It is essentially avascular but contains apertures for vessels, lymphatics, and nerves. It receives the tendons of insertion of the extraocular muscles and at the corneoscleral junction contains the canal of Schlemm. (From Cline et al., Dictionary of Visual Science, 4th ed)
By DataStellar Co., Ltd
By Willam Alexander Newman Dorland
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Hypoglossal Neuropathy
- twelfth cranial (hypoglossal) nuclei. fascicles are located in medulla, exits via hypoglossal foramen innervates muscles tongue. Lower brain stem diseases, including ischemia MOTOR NEURON affect nuclei fascicles. nerve may also be injured by diseases of the posterior fossa or skull base. Clinical manifestations include unilateral musculature and lingual dysarthria, with deviation tongue towards side weakness upon attempted protrusion.