Ischial spine
a pointed process from the posterior border of the ischium on a level with the lower border of the acetabulum; gives attachment to the sacrospinous ligament; the pudendal nerve passes dorsal to the ischial spine, which is palpable per vagina or rectum, and thus is used as a target for the needle-tip in administering a pudendal nerve block.
Synonym: spina ischiadica, ischiadic spine, sciatic spine.
Ischial spine a pointed process from the posterior border of the ischium on a level with the lower border of the acetabulum; gives attachment to the sacrospinous ligament; the pudendal nerve passes dorsal to the ischial spine, which is palpable per vagina or rectum, and thus is used as a target for the needle-tip in..
Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..
This tutorial noted some of the physical and chemical factors that provide the framework of a running water community in..
This tutorial elaborates on the effect of light on plant growth. It describes how different plants require different amo..
The nucleus containing the genetic material, DNA, and the mitochondria, well-identified as the "powerhouse of the cell",..
Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..
A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal ..
