Thoracic Wall: Ribs

Question 1

How many ribs are found in the typical adult?

Answer 1

24

Question 2

How many pairs of ribs are found in the typical adult?

Answer 2

12

Question 3

Which ribs are classified as “true ribs?”

Answer 3

1-7

Question 4

What classifies a true rib?

Answer 4

Articulating with the sternum via a single costal cartilage from that rib

Question 5

which ribs are classified as “false ribs?”

Answer 5

8-10 (and 11-12 technically, but not for this class)

Question 6

What classifies a false rib?

Answer 6

Being attached to the sternum indirectly by two or more costal cartilages fusing together, typically with the one above

Question 7

Which ribs are lfoating ribs?

Answer 7

11 and 12

Question 8

Whcat classifies a rib as floating?

Answer 8

Not articulating with the sternum at all

Question 9

Which ribs are calssified as “typical?”

Answer 9

3-9

Question 10

The rib that is “flat”

Answer 10

1

Question 11

Ribs that are classified as “atypical?”

Answer 11

1, 2, 10, 11, 12

Question 12

each typical rib will have what morphological features?

Answer 12

1) Head
2) Neck
3) Tubercle
4) Angle
5) Shaft/Body
6) Costal Groove

Question 13

What is the function of the costal groove?

Answer 13

To partially protect the intercostal vein, artery and nerve