sacrum-outline - Sacrum & Coccyx page 1 of 4 ANAT 51210...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Sacrum & Coccyx page 1 of 4 ANAT 51210 Lectures 17 & 18 Fall 2011 Osteology of the Sacrum and Coccyx I. Sacrum A. Introduction 1. Five fused vertebral segments 2. Triangular in shape 3. Bone concave anteriorly B. Base 1. Vertebral body of S1 a. Reniform in superior view b. Distinct superior epiphyseal rim and spongy bone center 2. Pedicle of S1 a. Short, extending posteriorly, with little lateral deviation b. Superior vertebral notch/incisure formed from the superior edge c. Laterally, continuous with the transverse process 3. Lamina of S1 4. Vertebral foramen: triangular in shape a. Forms the beginning of the sacral canal 5. Sacral ala [(sing.); alae (pl.),]: highly modified transverse process a. Costal element forms the anterior two-thirds of the sacral ala
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Sacrum & Coccyx page 2 of 4 b. True transverse process forms the posterior one-third of the sacral ala 6. Superior articular process of S1 a. Superior articular facet: faces BUM and is concave b. Mamillary process, variably present
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 4

sacrum-outline - Sacrum & Coccyx page 1 of 4 ANAT 51210...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online