This video outlines the anatomy of the sacrum, including its anatomical position, general features, muscular attachments, articulations, ligaments, and applied anatomy.

* ()الفصول (الطوابع الزمنية)
00:00 Intro (مقدمة)
00:21 Content of the lecture (محتوى)

General features (المعالم العامة للعظمة)
Muscular attachments (اتصالات العضلات)
Articulations (المفاصل)
Ligaments (الأربطه)

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1. Which of the following structures forms the intermediate sacral crest?
A. Fused spines of sacral vertebrae
B. Fused sacral transverse processes
C. Fused sacral articular processes
D. The sacral foramina

2. Which of the following structures forms the lateral sacral crest?
A. Fused spines of sacral vertebrae
B. Fused sacral transverse processes
C. Fused sacral articular processes
D. The sacral foramina

3. Which of the following structures forms the median sacral crest?
A. Fused spines of sacral vertebrae
B. Fused sacral transverse processes
C. Fused sacral articular processes
D. The sacral foramina

4. Which of the following is the most medial structure related to the ala of the sacrum?
A. Obturator nerve
B. Lumbosacral trunks
C. Sympathetic trunk
D. Iliolumbar artery

5. Which of the following structures passes through the sacral hiatus?
A. First pair of sacral nerves
B. One pair of coccygeal nerves
C. Dura and arachnoid mater
D. Lateral sacral arteries

6. Which of the following structures passes through the lesser sciatic foramen?
A. Pyriformis muscle
B. Sciatic nerve
C. Tendon of obturator internus muscle
D. Superior gluteal vessels

7. Which of the following muscles is not attached to the sacrum?
A. Iliacus
B. Pyriformis
C. Obturator internus
D. Coccygeus



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