Anatomy of Thoracic Walls and Breast Functions Quiz

The functions of the thoracic wall include protecting all structures inside the thorax (e.g., heart and lungs) and providing a mechanical basis for breathing.

Humans have 12 ribs.

True ribs (ribs 1-7) attach directly to the sternum via costal cartilage, while false ribs (ribs 8-10) attach to the costal cartilage of the rib above to indirectly attach to the sternum.

<p>Floating ribs (ribs 11-12) have some costal cartilage at their tips but have no anterior attachment, allowing them to 'float' in the lower thoracic wall.</p> Signup and view all the answers

<p>The inferior aspects of lower costal cartilages (and the sternum) form the inferior border of the thoracic cage anteriorly.</p> Signup and view all the answers

<p>The thoracic wall protects all structures inside the thorax and provides a mechanical basis for breathing.</p> Signup and view all the answers

<p>There are 12 ribs in total.</p> Signup and view all the answers

<p>True ribs (ribs 1-7) attach directly to the sternum via costal cartilage, while false ribs (ribs 8-10) attach indirectly to the sternum.</p> Signup and view all the answers

<p>Floating ribs (ribs 11-12) have some costal cartilage at their tips but have no anterior attachment to the sternum.</p> Signup and view all the answers

<p>The inferior aspects of the lower costal cartilages and the sternum form the inferior border of the thoracic cage anteriorly.</p> Signup and view all the answers