Osteology of Anterior Thorax

Question 1

What is unique about the body of the first rib?

Answer 1

The body (corpus/shaft) of the first rib is flattened and has a scalene tubercle flanked by the groove for the subclavian artery and the groove for the subclavian vein

Question 2

What attaches to the scalene tubercle of the first rib?

Answer 2

Anterior Scalene muscle

Question 3

Which groove on the body of the first rib is close to the vertebral end?

Answer 3

Groove for the subclavian artery and the first thoracic nerve

Question 4

Which groove on the body of the first rib is close to the sternal end?

Answer 4

Groove for the subclavian vein

Question 5

Is either the costal angle or costal groove apparent on the first rib?

Answer 5

No

Question 6

What unique feature is present on the body of the second rib?

Answer 6

The tuberosity for the serratus anterior

Question 7

What are the classifications of ribs 3-7 in the typical adult skeleton?

Answer 7

typical ribs, true ribs, costa verae, and vertebrosternal ribs

Question 8

What are the classifications of ribs 1 and 2 in the typical adult skeleton?

Answer 8

atypical ribs, true ribs, costa verae and vertebrosternal ribs

Question 9

What are the classifications of ribs 8 and 9 in the typical adult skeleton?

Answer 9

Typical ribs, false ribs, costa spuriae and vertebrochondral ribs

Question 10

What are the classifications of rib 10 in the typical adult skeleton?

Answer 10

atypical rib, false rib, costa spuriae and vertebrochondral rib

Question 11

What are the classifications of ribs 11 and 12 in the typical adult skeleton?

Answer 11

atypical ribs, false ribs, costa spuriae and vertebral ribs