ulna
IPA: ˈʌɫnʌ
noun
- (anatomy) The bone of the forearm that extends from the elbow to the wrist on the side opposite to the thumb, corresponding to the fibula of the hind limb. Also, the corresponding bone in the forelimb of any vertebrate.
Advertisement
Examples of "ulna" in Sentences
- (The ulna is the bone that reaches the wrist on the pinkie side.)
- The medial and lateral heads originate on the upper-arm bone and attach on the ulna, which is one of the forearm bones.
- "The fracture of the ulna is a simple one," said the spokesman, "and will become all right in the ordinary course of nature.
- In the Negro, the 'ulna', the longest bone of the fore-arm, is nearly of the same length as the 'os humeri', the latter being from one to two inches longer.
- For four or five days I thought over the history of his injury and the resulting inability to rotate the radius around the ulna -- in other words, to turn his hand over.
- Moving his right arm above water Alex let out a terrified shriek, his ulna and radius were protruding through his skin, and his arm was dangling as he desperatly tried to keep from drowning.
- Plaque-clogged arteries in the abdomen suggest a red-meat eater; black-encrusted lungs signify long-term nicotine addiction; the faint indentation in the ulna is the scarred evidence of an arm broken in childhood.
- At the elbow, which is the first angle of the wing, reaching backward when the wing is folded, the humerus articulates in a wisely designed way with two other bones, called the ulna and radius, which together constitute the forearm and extend to the wrist joint.
- A left humerus of which the upper-third is wanting, and which is so much slenderer than the right as apparently to belong to a distinct individual; a left 'ulna', which, though complete, is pathologically deformed, the coronoid process being so much enlarged by bony growth, that flexure of the elbow beyond a right angle must have been impossible; the anterior fossa of the humerus for the reception of the coronoid process being also filled up with a similar bony growth.
Advertisement
Advertisement