Sacrum & Coccyx Parts to Know: Sacrum Base of the Sacrum Sacral Canal
{"Image DocumentName": "Sacrum & Coccyx Parts to Know: Sacrum Base of the Sacrum Sacral Canal", "Image ImageDescription": "Median Sacral Crest. Sacral Cornua. Sacral Hiatus. Sacral Foramen. Ala. Lateral Sacral Crest. Apex of the Sacrum. Coccyx. Coccygeal Vertebrae. Coccygeal Cornu. Transverse Processes. Parts to Know: Sacrum. Base of the Sacrum - is broad and expanded, is directed upward and forward. In the middle is a large oval articular surface, the upper surface of the body of the first sacral vertebra, which is connected with the under surface of the body of the last lumbar vertebra by an intervertebral fibrocartilage. Sacral Canal - is a continuation of the vertebral canal and runs throughout the greater part of the sacral bone. Above the sacrum, it is triangular in form and below its posterior wall is incomplete, from the non-development of the laminae and spinous processes. Median Sacral Crest \u2013 an unpaired crest formed by the fused spinous processes of the upper four sacral vertebrae. Sacral Cornu \u2013 Sacral Cornu (singular); Sacral Cornua (plural); rounded process on each side of the fifth sacral vertebra that projects downward and represents an inferior articular process of the vertebra. Sacral Hiatus \u2013 normally occurring gap at the lower end of the sacrum, exposing the vertebral canal, due to failure of the laminae of the last sacral segment to coalesce. Sacral Foramen \u2013 any of 16 openings in the sacrum of which there are four on each side of the dorsal surface giving passage to the posterior branches of the sacral nerves and four on each side of the pelvic surface giving passage to the anterior branches of the sacral nerves. Ala \u2013 the upper surface of the lateral part of the sacrum adjacent to the body. Lateral Sacral Crest \u2013 crests that are rough ridges lying lateral to the sacral foramina; they represent the fused transverse processes of sacral vertebrae. Apex of the Sacrum \u2013 the tapering lower end of the sacrum that articulates with the coccyx. Coccyx. Coccygeal Vertebrae \u2013 is the final segment of the vertebral column in humans and apes. Comprising three to five separate or fused coccygeal vertebrae below the sacrum. Coccygeal Cornua \u2013 two processes that project upward from the dorsum of the base of the coccyx to articulate with the sacral cornua. Transverse Processes - a lateral process of a vertebra; the transverse processes are most prominent and noticeable on the first coccygeal segment.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}