S3 Osteology of the Anterior Thorax

Question 1

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

Answer 1

T5-T9

Question 2

How many sternabrae for the corpus sterni?

Answer 2

4 sternabrae

Question 3

What surface feature on the corpus sterni identifies the location of the synchondroses?

Answer 3

transverse lines

Question 4

What articular sites for the costal cartilage of ribs will be identified on the corpus sterni?

Answer 4

costal notches II-VII

Question 5

What feature of the corpus sterni is present in 4-7% of the population?

Answer 5

a sternal foramen

Question 6

What feature of the corpus sterni is present in 4-7% of the population?

Answer 6

a sternal foramen

Question 7

What causes the appearance of the sternal foramen?

Answer 7

failure of the ossification centers of the sternum to fuse together normally

Question 8

Which ribs are classified as typical ribs, true ribs, costa verae, and vertebrosternal ribs in the typical adult skeleton?

Answer 8

ribs 3-7

Question 9

Which ribs are classified as atypical ribs, true ribs, costa verae, and vertebrosternal ribs in the typical adult skeleton?

Answer 9

ribs 1 and 2

Question 10

Which ribs are classified as typical ribs, false ribs, costa spuriae, and vertebrochondral ribs in the typical adult skeleton?

Answer 10

ribs 8 and 9

Question 11

Which ribs are classified as atypical ribs, false ribs, costa spuriae, and vertebrochondral ribs in the typical adult skeleton?

Answer 11

rib 10

Question 12

Which ribs are classified as atypical ribs, false ribs, costa spuriae, and vertebral ribs in the typical adult skeleton?

Answer 12

ribs 11 and 12

Question 13

What is the classification of the 1st sternocostal or sternochondral joint?

Answer 13

cartilaginous (amphiarthrosis) synchondrosis

Question 14

What is the classification of the 2nd-7th sternocostal or sternochondral joint?

Answer 14

synovial plane (diarthrosis arthrodia)

Question 15

Which of the sternocostal or sternochondral ligaments is unique to the 2nd sternocostal or sternochondral joint?

Answer 15

intra-articular ligament

Question 16

What is the classification of the 6th through the 9th interchondral joints?

Answer 16

synovial plane (diarthrosis arthrodia)

Question 17

What is the classification of the 5th-6th or 9th-10th interchondral joint?

Answer 17

fibrous (amphiarthrosis) syndesmosis

Question 18

Which costal cartilages fail to form a joint at their sternal end?

Answer 18

11th and 12th costal cartilages

Question 19

What separates the manubrium sterni and corpus sterni?

Answer 19

manubriosternal symphysis

Question 20

What attaches to the scalene tubercle of the 1st rib?

Answer 20

anterior scalene muscle

Question 21

Which groove on the body (corpus or shaft) of the 1st rib is close to the vertebral end?

Answer 21

the groove for the subclavian artery and the 1st thoracic nerve

Question 22

Which groove on the body ( corpus or shaft) of the 1st rib is close to the sternal end?

Answer 22

groove for the subclavian vein

Question 23

What specifically will attach to the crest of the neck of the 2nd rib?

Answer 23

superior costotransverse ligament from the transverse process of T1

Question 24

What specifically attaches to the back of the neck of the 2nd rib?

Answer 24

inferior costotransverse ligament from the transverse process of T2

Question 25

What unique feature is present on the body (corpus or shaft) of the 2nd rib?

Answer 25

tuberosity for the serratus anterior

Question 26

Which ribs are classified as typical ribs, true ribs, costa verae, and vertebrosternal ribs in the typical adult skeleton?

Answer 26

ribs 3-7