Thoracic Cage

Front

What is the thoracic cage?

Back

The thoracic cage, also known as the rib cage, is a bony structure that surrounds and protects the thoracic cavity and its organs, including the heart and lungs. It is composed of the thoracic vertebrae, ribs, and sternum.

Front

What are the main components of the thoracic cage?

Back

The main components of the thoracic cage include 12 pairs of ribs, the sternum (breastbone), and the thoracic vertebrae (T1 to T12).

Front

What is the function of the ribs in the thoracic cage?

Back

The ribs serve to protect vital organs in the thoracic cavity, provide structural support, and assist in the mechanics of breathing.

Front

What is the difference between true ribs, false ribs, and floating ribs?

Back

True ribs (ribs 1-7) attach directly to the sternum. False ribs (ribs 8-10) attach indirectly to the sternum via cartilage. Floating ribs (ribs 11-12) do not attach to the sternum at all.

Front

What is the costal groove?

Back

The costal groove is a shallow indentation on the inner surface of the rib that houses the intercostal nerves and blood vessels.

Front

What is the articular tubercle?

Back

The articular tubercle is a small bony prominence on the rib that articulates with the transverse process of the thoracic vertebra.

Front

What is the neck of the rib?

Back

The neck of the rib is the flattened portion of the rib that connects the head to the body of the rib.

Front

What is the head of the rib?

Back

The head of the rib is the end of the rib that articulates with the bodies of the thoracic vertebrae.

Front

What is the costal angle?

Back

The costal angle is the point where the rib begins to curve away from the vertebral column, providing structural support and flexibility.

Front

What is the sternum?

Back

The sternum, or breastbone, is a flat bone located in the center of the chest that connects to the ribs via cartilage and provides protection to the heart and lungs.