XII. Osteology of the Anterior Thorax: Sternum

Question 1

What vertebral levels correspond to the position of the manubrium sterni?

Answer 1

T3-T4

Question 2

What vertebral levels correspond to the position of the corpus sterni?

Answer 2

T5-T9

Question 3

What is unique about the body (corpus or shaft) of the first rib?

Answer 3

the body (corpus or 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 4

What unique feature is present on the body (corpus or shaft) of the second rib?

Answer 4

the tuberosity for the serratus anterior

Question 5

How is the vertebral end of ribs 10, 11 and 12 similiar to that of the first rib?

Answer 5

all have a single articular surface on the head for the costocentral joint

Question 6

What is the condition of the body (corpus or shaft) of rib 12?

Answer 6

the costal angle and costal groove are absent and it is the shortest of all ribs