Dec 27, 2021 · Parts and Anatomy. The sacrum is a concave, irregular bone, resembling an inverted triangle. The widest part, called the base, is at the top, and the pointy end, called the apex, is at the bottom. It also has three surfaces – dorsal, lateral, and pelvic.

Jan 13, 2025 · Explore the spine anatomy with parts, names & diagrams. Learn how spine supports movement, protects the spinal cord & maintains body posture. ... Sacrum; Coccyx; Curvatures of the Spine. Cervical Curve; Thoracic Curve; ... These are located below the 12 mid-back (thoracic) bones and above the triangular sacrum, which is made of five fused bones ...

Dec 12, 2023 · The broadest part, known as the base, is at the top, while the pointed end, or apex, is at the bottom. It also includes three surfaces – dorsal, lateral, and pelvic. Additionally, the bone has a hollow canal referred to as the sacral canal, which runs through its core.

Nov 2, 2022 · The large, triangular-shaped sacrum (os sacrum) is composed of five vertebrae (S1-S5) that fuse during early adulthood (18-30 years). The five sacral vertebra of the sacrum (S1-S5). The smaller coccyx ( os coccygis ) articulates with S5 and is also known as the tailbone.

Jan 22, 2025 · Four ridges (lines of fusion) cross the anterior part of the sacrum, and sacral foramina are located at either end of these ridges. There foramina allow blood vessels and nerves to pass. the tapering lower end of the sacrum that articulates with the coccyx. Start studying Sacrum & Coccyx.

Jan 20, 2015 · This human anatomy diagram with labels depicts and explains the details and or parts of the Coccyx And Sacrum. Human anatomy diagrams and charts show internal organs, body systems, cells, conditions, sickness and symptoms information and/or tips to ensure one lives in good health.

The sacral region (sacrum) is at the bottom of the spine and lies between the fifth segment of the lumbar spine (L5) and the coccyx (tailbone). The sacrum is a triangular-shaped bone and consists of five segments (S1-S5) that are fused together.

There are four bones that meet up with the sacrum to form joints. One joint is between the last lumbar vertebrae, L5, and the sacrum. Another joint is formed just below the sacrum where it meets the lowest portion of the spinal column, the coccyx, or tailbone.

This photo gallery presents the anatomy of sacrum and coccyx by means of 3D-reconstructions, axial, sagittal and coronal reconstructions obtained from a scan of pelvis. Pelvis, anterior view, 3D reconstruction (CT-scan).

Jan 18, 2025 · The top of the sacrum, also known as the base, articulates with the fifth lumbar vertebra (L5) of the lower back. The bottom of the sacrum, also known as the apex, projects downward and articulates with the coccyx (tailbone). The sacrum is wider at the base and tapers down to a point at the apex.