Anatomy of the Sternum

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Questions and Answers

What is located at the lower end of the lateral border?

A facet for articulation with the upper half of the posterior end of the third costal cartilage

A facet for articulation with the lower half of the anterior end of the second costal cartilage

A demifacet for articulation with the upper half of the posterior end of the second costal cartilage

A demifacet for articulation with the upper half of the anterior end of the second costal cartilage (correct)

Which end of the second costal cartilage articulates with the demifacet?

The medial end

The posterior end

The anterior end (correct)

The lateral end

What percentage of the second costal cartilage articulates with the demifacet?

The upper three-quarters

The entire cartilage

The upper half (correct)

The upper quarter

Where is the demifacet located in relation to the second costal cartilage?

At the lower end of the lateral border Signup and view all the answers

What is the function of the demifacet at the lower end of the lateral border?

To articulate with the upper half of the anterior end of the second costal cartilage Signup and view all the answers

Where is the demifacet for articulation located?

At the inferior end of the body of the sternum Signup and view all the answers

With which costal cartilage does the demifacet articulate?

Seventh costal cartilage Signup and view all the answers

What type of facet is located at the inferior end of the body of the sternum?

Demifacet Signup and view all the answers

What is the function of the demifacet on the sternum?

To form a joint with a costal cartilage Signup and view all the answers

What is the term for the bony structure that the demifacet is located on?

Sternum Signup and view all the answers

What is the xiphoid process attached to?

The inferior end of the body of the sternum Signup and view all the answers

What is the xiphoid process?

The smallest part of the sternum Signup and view all the answers

What is the function of the xiphoid process?

To serve as an attachment point for muscles Signup and view all the answers

Where is the xiphoid process located?

At the inferior end of the sternum Signup and view all the answers

What is the relationship between the xiphoid process and the body of the sternum?

The xiphoid process is attached to the body of the sternum Signup and view all the answers

What is the name of the part of the sternum that forms part of the bony framework of the neck and the thorax?

Manubrium Signup and view all the answers

What is the function of the manubrium of the sternum?

To form part of the bony framework of the neck and the thorax Signup and view all the answers

Where is the manubrium of the sternum located?

In the neck and the thorax Signup and view all the answers

What is located on each side of the upper lateral margin?

A demifacet for articulation with the inferior end of the seventh costal cartilage Signup and view all the answers

What type of framework does the manubrium of the sternum form part of?

Bony framework Signup and view all the answers

What is the manubrium of the sternum a part of?

Sternum Signup and view all the answers

With which part of the seventh costal cartilage does the demifacet articulate?

The inferior end Signup and view all the answers

Where is the demifacet located in relation to the lateral margin?

On the upper end Signup and view all the answers

What is the purpose of the demifacet on the upper lateral margin?

To articulate with the seventh costal cartilage Signup and view all the answers

How many demifacets are located on each side of the upper lateral margin?

One Signup and view all the answers

Study Notes

Sternum

The manubrium of the sternum is part of the bony framework of the neck and thorax.

Articulation with Costal Cartilages

The lower end of the lateral border of the manubrium has a demifacet for articulation with the upper half of the anterior end of the second costal cartilage.
The inferior end of the body of the sternum has a demifacet for articulation with the upper demifacet on the seventh costal cartilage.

Xiphoid Process

The xiphoid process is the smallest part of the sternum.
Each side of its upper lateral margin has a demifacet for articulation with the inferior end of the seventh costal cartilage.