S3 Embryology of the Anterior Thorax

Question 1

How many primary centers of ossification appear in the corpus sterni?

Answer 1

~6

Question 2

In what party of the sternum will a secondary center of ossification appear?

Answer 2

xiphoid process

Question 3

In what part of the rib will primary centers of ossification appear?

Answer 3

body (corpus, shaft)

Question 4

In what parts of the rib will secondary centers of ossification appear?

Answer 4

head, articular surface of the tubercle and the non-articular surface of the tubercle

Question 5

Which ribs will demonstrate secondary centers of ossification?

Answer 5

ribs 1-10

Question 6

Which ribs lack secondary centers of ossification?

Answer 6

ribs 11 and 12

Question 7

Which ribs demonstrate 3 secondary centers of ossifcation?

Answer 7

ribs 2-9

Question 8

Which ribs have only 2 secondary centers of ossification?

Answer 8

ribs 1 and 10

Question 9

How many primary centers of ossification appear in the manubrium?

Answer 9

1 - 3 centers have been identified