Chest wall and diaphragm

Question 1

What muscle attaches to the scalene tubercle?

Answer 1

• Scalenus anterior

Question 2

Which major blood vessels pass across the superior surface of the first rib immediately anterior and posterior to this muscle attachment?

Answer 2

• Anterior: subclavian vein
• Posterior: subclavian artery

Question 3

• Which ribs articulate with the sternum at the sternal angle?

Answer 3

2nd Ribs

Question 4

• What vertebral level is indicated by the sternal angle?

Answer 4

T4/T5

Question 5

• What other anatomical landmarks are located at the sternal angle?

Answer 5

Junction between ascending aorta and arch of the aorta
Junction between the arch of the aorta and decending aorta
Bifurcation of trachea.

Question 6

What does the bucket handle motion of the ribs do?

Answer 6

increases in transverse dimension

Question 7

what does the pump handle motion of the sternum do?

Answer 7

increase in AP dimension

Question 8

what does the inferior movement of the diaphragm do?

Answer 8

increase in vertical dimension

Question 9

• What articulate with the manubrium of the sternum?

Answer 9

• Clavicle, cartilages of 1st ribs, part of the cartillages of 2nd ribs

Question 10

• What articulate with the body of the sternum?

Answer 10

• Cartilages of Ribs 2-7 (and 8-10 indirectly)