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Anatomy of Atypical Ribs: 10th, 11th, and 12th Ribs

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Anatomy of Atypical Ribs: 10th, 11th, and 12th Ribs

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Questions and Answers

What is the distinguishing feature of the atypical ribs mentioned in the text?

The head of the rib has two facets (correct)

The rib is bound by twine

The second rib has a length equal to the first rib

The surfaces of the rib go in between the typical vertebral surfaces

What is the relationship between the length of the first rib and the second rib, according to the text?

The second rib is shorter than the first rib

The second rib is the same length as the first rib (correct)

The text does not provide information about the relative lengths of the first and second ribs

The second rib is longer than the first rib

What is the significance of the surfaces of the atypical ribs going in between the typical vertebral surfaces?

It has no particular significance and is just a descriptive detail

It suggests the ribs are fused to the vertebrae

It means the ribs are providing additional support to the vertebral column

It indicates the ribs are abnormally shaped (correct)

What is the purpose of the twine mentioned in the text?

<p>The twine is used to measure the length of the ribs</p> Signup and view all the answers

Study Notes

Atypical Ribs

10th rib has a single articular facet on its head.

11th and 12th Ribs

Ribs XI and XII articulate only with the bodies of their own vertebrae.
These ribs have no tubercles or necks.
They are short, have little curve, and are pointed anteriorly.

Atypical Thoracic Vertebrae

The shaft of the vertebra extends backward and laterally to the tubercle at a site termed the angle.
The inferior margin of the internal surface is marked by a distinct coastal groove.

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Description

Explore the unique characteristics of atypical ribs such as the 10th rib with a single articular facet on the head, and the 11th and 12th ribs that only articulate with their own vertebrae. Learn about their structures and functions in the human body.