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..
DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..
Learn about community patterns and the ecological factors influencing these patterns. Revisit some of the ecosystems you..
Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..
Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..
Different pregnancy and birth control and contraception strategies are described. Read this tutorial to learn each of th..
This tutorial elucidates body temperature regulation. Know the details here to learn how the body sets the body temperat..
