Anatomy of the Sacrum

The video tutorial provides a detailed overview of the sacrum, covering its various surfaces, including the superior, anterior, and posterior aspects. It explains the body of the sacrum, the sacral promontory, and the transverse ridges. The tutorial also discusses the ala, auricular surface, and their significance in forming the sacroiliac joint. Additionally, it covers the posterior aspect, including the median and lateral sacral crests, posterior sacral foramina, and the superior articulating processes. The sacral canal and sacral hiatus are also highlighted.

What is the superior surface of the sacrum?

• The back part of the sacrum

• The topmost part of the sacrum

• The side part of the sacrum

• The bottom part of the sacrum

What is the sacral promontory?

• A protruding part of the sacrum

• A joint in the sacrum

• A ridge on the sacrum

• A hole in the sacrum

How many bones originally formed the sacrum?

• Six

• Five

• Three

• Four

What are the transverse ridges?

• Lines on the anterior surface of the sacrum

• Joints in the sacrum

• Protrusions on the posterior surface of the sacrum

• Holes in the sacrum

What is the function of the auricular surface of the sacrum?

• It supports the body's weight

• It forms a joint with the ilium

• It protects the spinal cord

• It connects to the femur

What is the median sacral crest?

• A ridge on the anterior surface

• A ridge on the posterior surface

• A hole in the sacrum

• A joint in the sacrum

What are the posterior sacral foramina?

• Joints in the sacrum

• Openings on the anterior surface

• Openings on the posterior surface

• Ridges on the sacrum

What is the lateral sacral crest?

• A hole in the sacrum

• A joint in the sacrum

• A ridge on the posterior surface

• A ridge on the anterior surface

What is the sacral canal?

• A hole in the sacrum

• A joint in the sacrum

• A ridge on the sacrum

• A passage for nerves

What is the sacral hiatus?

• A protrusion on the sacrum

• A joint in the sacrum

• A hole at the bottom of the sacral canal

• A ridge on the sacrum