| 词汇 | ossicle |
| 释义 | ossicle noun[ C ] medical specializeduk /ˈɒs.ɪ.kəl/ us /ˈɑːs.ɪ.kəl/ a small bone or structure that is similar to a bone: 小骨;骨状的 The auditory ossicles are small bones in the middle ear.听小骨是中耳内的小骨。 Bone structures acetabular acetabulum acromial acromioclavicular acromion foramen magnum frontal bone glenoid gnathic gynecoid osteophyte osteotomy parietal parietal bone pectoral girdle TMJ trapezoidal triquetrum true rib tubercle Examples of ossicleossicle Cynodonts had a more mammal-like jaw musculature, but the ear ossicles were still attached to the lower jaw, as they are in reptiles. Dissection of the middle ear has revealed morphological defects of the ossicles which disrupt the ossicular chain resulting in a conductive hearing loss. Much scarcer are other types of bituminous skeletal limestones, which consist mostly of crinoid ossicles associated with rare brachiopod and trilobite remains. Mandible, maxilla and auditory ossicles (malleus, incus and stapes) are branchial arch derivatives. Belemnites, bivalves, crinoid ossicles and wood remains are scattered throughout. The ossicles function as an impedance transformer to provide sufficient force at the oval window to move the fluid which fills the cochlea in response to external acoustic vibrations. As well as the local fauna, the mudstone also contains smaller debris: five-sided star-shaped crinoid ossicles, a few small belemnites, a possible echinoid spine impression and probable fish scales. All of the ossicles move as a unit. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They are supported by an internal skeleton of calcium carbonate plates referred to as vertebral ossicles. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Vibrations of the drum are conveyed to the inner ear via a system of bones called ossicles. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The auditory ossicles can also reduce sound pressure (the inner ear is very sensitive to overstimulation), by uncoupling each other through particular muscles. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The mammalian middle ear contains three ossicles, which transfers the vibrations of the eardrum into waves in the fluid and membranes of the inner ear. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The joint's function is to transfer vibrations between the ossicles in the middle ear, which is perceived as sound. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Once the vibrations reach the cochlea, the stirrup (part of the ossicles) puts pressure on the oval window. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There are a number of cirri or unbranched appendages on a low, cone-shaped dorsal ossicle, a bone-like structure in the centre of the disc. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. See all examples of ossicle 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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