| 词汇 | ciliary-muscle |
| 释义 | ciliary muscle noun[ C ] anatomy specializeduk /ˈsɪl.i.ə.ri ˌmʌs.əl/ us /ˈsɪl.i.er.i ˌmʌs.əl/ one of the muscles around the lens of the eye that can change the shape of the lens in order to produce a clear image睫状肌（晶状体周围的一块肌肉，作用是改变晶状体形状以获得清楚的映像） The eye & surrounding area beadily beetling canthus chiasm chiasma compound eye eyeball eyelid glassy limbus macula macula lutea macular monobrow optic nerve staring suborbital superciliary supraoptic supraorbital All around the edge, where the cornea, sclerotic, and choroid meet, is a ring of involuntary muscular fibers, forming the ciliary muscle. To flatten the lens, the ciliary muscle relaxes, the elastic force of the eyeball resumes its tension on the suspensory ligament, and the membranous capsule resumes its pressure on the sides of the lens. While the greater portion of the eyeball is concerned in the focusing of light, the crystalline lens, operated by the ciliary muscle, serves as the special instrument of accommodation. Examples of ciliary muscleciliary muscle This ganglion mediates both the pupillary light reflex and visual accommodation through its control of the iris and ciliarymuscle, respectively. Anterogradely labeled terminals in the visual sensory nuclei, indicating tracer spread from the ciliarymuscle to the retina, were present in both cases. It is similarly apparent that spread to the iris may have occurred following injections of the ciliarymuscle. In contrast, those cells located caudally, dorsal and ventral to the oculomotor nucleus, control the ciliarymuscle. Injections were made into the ciliary ganglion, the vitreous chamber, the anterior chamber, or the ciliarymuscle. Reproducible stimulation of ciliarymuscle contraction in cynomologous monkey via a permanent indwelling midbrain electrode. Quantitative analysis of 'plaque material' between ciliarymuscle tips in normal- and glaucomatous eyes. Accommodation and vergence are also known as the near response, while inhibition of the ciliarymuscle is also known as the far response. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. With administration of a ganglion-blocking drug, the ciliarymuscle can not contract (cycloplegia) and the patient loses the ability to focus their eyes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Some parasympathetic light-reaction neurons that were originally destined for the iris sphincter will end up innervating the ciliarymuscle. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The ciliarymuscle is also more massive than the constrictor pupillae, again by a factor of twenty. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Exceedingly small changes in axial length of the eyeball (18.619.2 micrometres) are caused by the action of the ciliarymuscle during accommodation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. When the ciliarymuscle contracts, it pulls itself forward and moves the frontal region toward the axis of the eye. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. When the ciliarymuscle contracts, it opens the trabecular meshwork through increased tension on the scleral spur. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There will be no response to accommodation the "ciliarymuscle" is also paralyzed. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. See all examples of ciliary muscle These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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