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A–Z Index

S

All anatomy entries starting with "S"

461 entries

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

461 entries

Bone Sacral Ala ala ossis sacri Pelvis & Hip The sacral ala (wings of the sacrum) are the lateral masses of the sacrum formed by… Bone Sacral Body corpus ossis sacri Lower Back The sacral body comprises the five fused sacral vertebral bodies forming the anterior curved surface of… Joint Sacral Canal Space canalis sacralis Lower Back The sacral canal is the continuation of the spinal canal through the sacrum, containing the sacral… Bone Sacral Foramina foramina sacralia Pelvis & Hip The sacrum has paired anterior (pelvic) and posterior sacral foramina at four levels (S1-S4). The anterior… Joint Sacral Foraminal Space spatium foraminis sacralis Lower Back Each of the four paired sacral foramina transmits a sacral spinal nerve and associated vessels, forming… Bone Sacral Hiatus hiatus sacralis Pelvis & Hip The sacral hiatus is the caudal opening of the sacral canal, formed by the failure of… Bursa Sacral Hiatus Bursa bursa hiatus sacralis Lower Back A small bursa at or adjacent to the sacral hiatus between the sacrococcygeal ligament and the… Vessel Sacral Perforating Vessels vasa perforantia sacralia Lower Back The sacral perforating vessels are branches of the lateral sacral arteries and veins that pass through… Nerve Sacral Plexus plexus sacralis Pelvis & Hip The sacral plexus is formed on the anterior surface of the piriformis muscle in the greater… Bone Sacral Promontory promontorium ossis sacri Pelvis & Hip The sacral promontory is the anterior projecting edge of the superior surface of the first sacral… Nerve Sacral Splanchnic Nerves nervi splanchnici sacrales Pelvis & Hip The sacral splanchnic nerves are postganglionic sympathetic fibres arising from the sacral sympathetic ganglia (S2-S4 level… Nerve Sacral Sympathetic Chain truncus sympathicus — pars sacralis Pelvis & Hip The sacral sympathetic chain lies on the anterior surface of the sacrum medial to the sacral… Bursa Sacrococcygeal Bursa bursa articulationis sacrococcygeae Lower Back A bursa at the sacrococcygeal joint between the apex of the sacrum and the first coccygeal… Joint Sacrococcygeal Joint articulatio sacrococcygea Pelvis & Hip The sacrococcygeal joint connects the sacral apex to the coccyx base through a fibrocartilaginous disc, allowing… Ligament Sacrococcygeal Ligament Complex complexus ligamentosus sacrococcygeus Lower Back The sacrococcygeal ligament complex comprises the anterior, posterior, and lateral sacrococcygeal ligaments enclosing the sacrococcygeal joint,… Joint Sacroiliac Joint articulatio sacroiliaca Pelvis & Hip The sacroiliac joint is one of the most stable joints in the body, transmitting the entire… Joint Sacroiliac Joint (Full Detail) articulatio sacroiliaca (detail) Pelvis & Hip The sacroiliac joint is a complex compound joint with an anterior synovial cavity and a posterior… Bursa Sacroiliac Joint Capsular Bursa bursa capsulae articulationis sacroiliacae Lower Back A bursa within the posterior sacroiliac joint capsule, associated with the complex synovial and fibrocartilaginous SI… Joint Sacroiliac Joint Space spatium articulationis sacroiliacae Lower Back The sacroiliac joint has an anterior synovial cavity (the lower one-third) and a posterior fibrocartilaginous syndesmosis.… Ligament Sacroiliac Ligaments ligamenta sacroiliaca Pelvis & Hip The sacroiliac ligaments form the strongest ligament complex in the body, with the posterior sacroiliac ligaments… Ligament Sacroiliac Posterior Long Ligament ligamentum sacroiliacum posterius longum Lower Back The long posterior sacroiliac ligament connects the third and fourth sacral transverse tubercles and the sacral… Ligament Sacroiliac Posterior Short Ligament ligamentum sacroiliacum posterius breve Lower Back The short posterior sacroiliac ligament connects the first and second transverse tubercles of the sacrum to… Ligament Sacrospinous Ligament ligamentum sacrospinale Pelvis & Hip The sacrospinous ligament connects the sacral and coccygeal lateral borders to the ischial spine, converting the… Ligament Sacrospinous Ligament (Full) ligamentum sacrospinale Pelvis & Hip The sacrospinous ligament converts the greater and lesser sciatic notches into the greater and lesser sciatic…