ischium


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ischium

[′is·kē·əm]
(anatomy)
Either of a pair of bones forming the dorsoposterior portion of the vertebrate pelvis; the inferior part of the human pelvis upon which the body rests in sitting.
(invertebrate zoology)
References in periodicals archive ?
As they approach the ischial tuberosity the fibres twist on themselves and diverge again before attaching to the medial margin of the tuberosity, and to the lower margin of the ramus of the ischium (Figure 2) (Last, 1978; Romanes, 1964; Williams et al.
The avian similarities extend to Unenlagia's hindquarters, where it has a prominent bump on the ischium, one of the bones of the pelvis.
The researchers got permission to make computed tomography-scans of the pelvis, which is kept at the British Museum in London and they could refit the pieces of the pubis, ischium, and ilium together in a three-dimensional, virtual reconstruction.
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