Rib Anatomy: Atypical Ribs of the Thoracic Cage
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Rib Anatomy: Atypical Ribs of the Thoracic Cage

Learn about the characteristics and articulations of atypical ribs in the thoracic cage, including Rib I, Rib II, Rib X, and Ribs XI and XII. Explore the unique features of these ribs and their importance in the skeletal structure.

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@ReachableNiobium

Questions and Answers

Which ribs are directly attached to the sternum via costal cartilage?

True ribs (I-VII)

What are the three articular surfaces on the neck of a typical rib?

Costal cartilage, head, and tubercle

Which joint allows articulation between the tubercle of a rib and the vertebral transverse process?

Costotransverse joint

What structures do the floating ribs (XI-XII) lack articulation with?

<p>Both B and C</p> Signup and view all the answers

Which of the following is NOT a typical feature seen on the posterior aspect of a rib?

<p>Costal groove</p> Signup and view all the answers

What is the primary role of the External intercostal muscles in respiration?

<p>Elevate the ribs to increase thoracic volume</p> Signup and view all the answers

Which of the following joints allows articulation between the head of a rib and the vertebral bodies?

<p>Costovertebral joint</p> Signup and view all the answers

The articulations between the ribs and vertebrae are examples of which type of joint?

<p>Synovial</p> Signup and view all the answers

Which of the following muscles is considered an accessory muscle of respiration?

<p>Sternocleidomastoid</p> Signup and view all the answers

The transverse processes of the thoracic vertebrae articulate with which part of the ribs?

<p>Tubercle</p> Signup and view all the answers

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