| 词汇 | example_english_pecten |
| 释义 | Examples of pectenThese 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. The dorsal tip of the pecten projected on the visual field is shown as a landmark. Saccadic oscillations facilitate ocular perfusion from the avian pecten. The pecten was used to assist in orientation of the eyecup and division into quadrants. Basal joint of antennae with narrow but strong pecten at base. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Eagles have the unique feature of the pecten. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Pecten is highly-rich in alkaline phosphatase activity and polarized cells in its "bridge" portion - both befitting its secretory role. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The bird retina has a fan shaped blood supply system called the pecten. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The avian eye also contains a structure called a pecten oculi, which is a comb-like projection of the retina. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The pigmentation of the pecten is believed to protect the blood vessels against damage from ultraviolet light. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Characters: the head is smooth, antennae four-fifths to one, basal joint thick, with slight pecten. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The pecten is also used to preen feathers and to hold slippery food items. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The pecten is a specialised structure in the avian retina. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The pecten pubis forms part of the pelvic brim. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The eye's internal anatomy is similar to that of other vertebrates, but has a structure, the pecten oculi, unique to birds. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Pecten oculi is abundantly filled with melanin granules which have been proposed to absorb stray light entering the bird eye to reduce background glare. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The pecten is a poorly understood body consisting of folded tissue which projects from the retina. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The outer margin of the disc is bordered with black pigment, as if a shadow were cast upon it by the pecten. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The pecten helps to solve this problem by greatly reducing the number of blood vessels in the retina and leading to the extremely sharp eyesight of birds such as hawks. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Pecten cells are packed with dark melanin granules, which have been theorized to keep this organ warm with absorption of stray light falling on the pecten. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This, in turn may stimulate release of nutrients from pecten oculi to retina, via vitreous humor; it is plausible as bird retina is devoid of its own blood vessels. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In males the length of pecten abruptly shortens to the distal part of tip, while in females pecten length is short to the tip of antenna as near invisible papilla. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. 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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