Osteology of the Thoracic Cavity YBOD200 Ms AT Sebelebele

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What is the function of the thoracic cavity?

Protection of lungs, heart, and great vessels

Where is the sternal angle (manubriosternal joint) located?

T4-T5

Which ribs are considered 'floating ribs'?

Ribs 11 and 12

What is the function of the xiphoid process?

<p>Inferior attachment for rib 7 costal cartilage</p> Signup and view all the answers

How are true ribs different from false ribs?

<p>Their articulation with the sternum</p> Signup and view all the answers

Which thoracic vertebrae articulate with the ribs?

<p>T5-T9</p> Signup and view all the answers

What is the distinct feature found on the superior surface of Rib 1?

<p>Scalene tubercle</p> Signup and view all the answers

Where does the serratus anterior muscle originate from?

<p>Scalene tubercle</p> Signup and view all the answers

Which rib has a head that articulates with the body of T1 vertebra?

<p>Rib 2</p> Signup and view all the answers

What is located between the head and tubercle of a typical rib?

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

Where is the intercostal neurovascular bundle found in a typical rib?

<p>Inferior margin of internal surface of the shaft</p> Signup and view all the answers

What articulates with the Inferior costal facet on a vertebra above in typical ribs?

<p>Superior facet on corresponding vertebra</p> Signup and view all the answers

Which thoracic vertebrae has a heart-shaped vertebral body?

<p>T8</p> Signup and view all the answers

Which ribs articulate with the vertebral column with only one facet to T10?

<p>Rib 10</p> Signup and view all the answers

Which thoracic vertebrae have full superior costal facets?

<p>T1; T10-12</p> Signup and view all the answers

Which thoracic vertebrae lack an inferior costal facet?

<p>T1; T10-12</p> Signup and view all the answers

Which thoracic vertebra articulates with the 1st rib as the only one without demifacets?

<p>T1</p> Signup and view all the answers

Which ribs lack tubercles and have a short, slightly curved structure?

<p>Rib 11 and 12</p> Signup and view all the answers

What type of joint is the Costovertebral joint?

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

Which ligament attaches the crest to the intervertebral disc within the Costovertebral joint?

<p>Intra-articular ligament</p> Signup and view all the answers

What type of joint is the Sternocostal joint for ribs 2-7?

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

What type of joint is the Costochondral joint?

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

Which movement of the thoracic wall is responsible for altering the anteroposterior dimensions of the thoracic cavity?

<p>Pump handle movement</p> Signup and view all the answers

What does the Interchondral joint anchor to the sternum?

<p>Ribs 8-10</p> Signup and view all the answers

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