| 词汇 | ulna |
| 释义 | ulna noun[ C ] anatomy specializeduk /ˈʌl.nə/ us /ˈʌl.nə/pluralulnae or ulnas a long, thin bone in the lower part of your arm尺骨（前臂两根长骨之一，位于前臂内侧，连接肘内部） Compare radius(BONE)specialized solar22/iStock/Getty Images Plus/GettyImages Bone structures acetabular acetabulum acromial acromioclavicular acromion foramen magnum frontal bone glenoid gnathic gynecoid osteology osteophyte osteotomy parietal parietal bone tibiotalar TMJ trapezoidal triquetrum true rib You can also find related words, phrases, and synonyms in the topics: The arm Examples of ulnaulna From left to right, the left tibia, the right femur, the left humerus, the left ulna and the left radius. A subadult left ulna measures 185 mm in length, suggesting an adolescent of 9 to 15 years. The ulna and radius are connected at both ends. Long bones (femur, tibia and ulna) were cleaned from their flesh and whole bone powder was obtained by crushing them. The ulna is a dorso-ventrally flattened bone with a long groove on the proximal part of the ventral side for contact with the radius. However, their hands were together in front of them, crossing one above the other at the level of the distal radii and ulnae, carpals, or metacarpals. After this, the freed distal end is reattached to the proximal ulna with the formerly mentioned plate. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is the proximal extremity of the ulna which is articulated with the humerus and constituting a part of the elbow articulation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The ulna is slender and cylinder-shaped with a length of 70% of that of the humerus. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. At its lower end, the humerus has a larger facet contacting the radius than contacting the ulna. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The best examples of ginglymus are the interphalangeal joints and the joint between the humerus and ulna. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Proximally, the ulna has a bony process, the olecranon process, a hook-like structure that fits into the olecranon fossa of the humerus. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The radius and ulna (forearm bones) locked together so that there was no possibility of pronation or supination (twisting) as in human forearms. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The forearm contains two long bones, the radius and the ulna, forming the radioulnar joint. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The humerus joins the radius and ulna (forearm) to form the elbow. 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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