Bones Of The Thorax

Question 1

What do the bones of the thorax consist of?

Answer 1

Sternum, 12 pairs of ribs and their costal cartilages and the 12 thoracic vertebrae (T1-12)

Question 2

What do the bones of the thorax provide?

Answer 2

Attachment points for the muscles of respiration, move to facilitate breathing and provide protection for the vulnerable organs within the thorax

Question 3

How does the sternum sit?

Answer 3

Anteriorly

Question 4

What does the sternum consist of?

Answer 4

The manubrium, sternal body and xiphoid process

Question 5

What do the ribs articulate with?

Answer 5

The thoracic vertebrae - it is the end of the rib that joins (called the head of the rib)

Question 6

What ribs are true ribs?

Answer 6

1-7, they articulate directly with the sternum anteriorly with short costal cartilages

Question 7

What ribs are false ribs?

Answer 7

Ribs 8-12 - false ribs articulate indirectly with the sternum anteriorly via long shared costal cartilages - don’t articulate with the STERNUM

Question 8

What ribs are floating ribs?

Answer 8

Ribs 11-12, they do not articulate with the sternum anteriorly, they are shorter and pointier than the other ribs

Question 9

What makes up the thoracic cage?

Answer 9

12 thoracic vertebrae