thorax/ribs

Question 1

a. which are true ribs
b. false ribs
c. floating ribs

Answer 1

a. 1-7
b. 8-10
c. 11,12

Question 2

which of the following is false?

a. typical ribs are 3-9 and contain head, neck, and shaft
b. rib 2 is thinner and less curved than rib 1
c. T2-T3 is = level of manubrium
d. shaft of typical rib has a costal andgle & groove to protect intercostal VANs

Answer 2

c. manubrium = T3-T4

Question 3

match arterial supply of thorax: supreme intercostal, posterior intercostal, anterior intercostal

a. drains upper 2 intercostal spaces,
b. drains intercostals 1-9, branch of internal thoracic -> subclavian
c. branch of costocervical -> subclavian
drains intercostals 3-12

Answer 3

● Supreme intercostal: drains upper 2 intercostal spaces, branch of costocervical -> subclavian
● Posterior intercostal: drains intercostals 3-12
● Anterior intercostal: drains intercostals 1-9, branch of internal thoracic -> subclavian

Question 4

match the venous supply of thorax: azygos, brachiocephalic, internal thoracic

a. formed by internal jugular + subclavian veins

b. drains R vertebral column, hemiazygos drains inferior L and drains into azygos -> SVC

c. Internal thoracic: travels parallel to anterior thoracic wall -> brachiocephalic vein

Answer 4

● Azygos: drains R vertebral column, hemiazygos drains inferior L and drains into azygos -> SVC
● Brachiocephalic: formed by internal jugular + subclavian veins
● Internal thoracic: travels parallel to anterior thoracic wall -> brachiocephalic vein