Effects of Elevated Thyroid Hormone on Adult Rabbit Extraocular Muscles
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چکیده
منابع مشابه
Microanatomy of Adult Zebrafish Extraocular Muscles
Binocular vision requires intricate control of eye movement to align overlapping visual fields for fusion in the visual cortex, and each eye is controlled by 6 extraocular muscles (EOMs). Disorders of EOMs are an important cause of symptomatic vision loss. Importantly, EOMs represent specialized skeletal muscles with distinct gene expression profile and susceptibility to neuromuscular disorders...
متن کاملProlongation of Relaxation Time in Extraocular Muscles With Brain Derived Neurotrophic Factor in Adult Rabbit
Purpose We tested the hypothesis that short-term treatment with brain derived neurotrophic factor (BDNF) would alter the contractile characteristics of rabbit extraocular muscle (EOM). Methods One week after injections of BDNF in adult rabbit superior rectus muscles, twitch properties were determined in treated and control muscles in vitro. Muscles were also examined for changes in mean cross...
متن کاملUltrastructural changes in rabbit extraocular muscles after oculomotor nerve section.
Ultrastructural changes in rabbit superior recti have been studied from 24 hours to 21 days after intracranial section of the oculomotor nerve. Earliest changes were observed in a few myelinated axons within the muscle 24 hours after nerve section. Within 48 hours, degenerative changes in the myelinated axons became manifest and fragmentation of the myelin sheaths started. During the second and...
متن کاملNeurophysiology of extraocular muscles.
E. lye movements may be divided grossly into "tonic" and "phasic" movements. Are both of these principal types produced by the same motor nerves and muscle fibers, or are separate systems present that are functionally suited to each of the types of movements? Morphological and physiological studies demonstrate that at least two and possibly three neuromuscular systems are present in eye muscles...
متن کاملMyotendinous nerve endings in human infant and adult extraocular muscles.
Myotendinous nerve endings in extraocular muscles of some mammals consist exclusively of palisade nerve endings incorporated in myotendinous cylinders. There is evidence for a similar form in man, some doubt remains. The objectives of the present study were to examine the structure and distribution of nerve endings in extraocular muscles of infant and adult human material. Muscles from five inf...
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ژورنال
عنوان ژورنال: Investigative Opthalmology & Visual Science
سال: 2010
ISSN: 1552-5783
DOI: 10.1167/iovs.09-3681