Thorax

Question 1

Function of the Thorax

Answer 1

Protection
Mechanics of respiration
Muscle attachment

Question 2

The manubrium articulates with which ribs

Answer 2

first two

Question 3

What is the space below the 12th rib called

Answer 3

The subcostal space

Question 4

Which ribs are the true ribs and why

Answer 4

ribs 1-7 are true ribs because they have their own costal cartilage

Question 5

Which ribs are false ribs and which are floating?

Answer 5

ribs 8-10 are false as they attach to above costal cartilage

ribs 11 and 12 are floating and do not attach to the sternum

Question 6

Which ribs are atypical?

Answer 6

1, 2 /10-12

Question 7

What type of joint is the costalvertebral joint?

Answer 7

Synovial

Question 8

The pump-handle mechanism for breathing changes which dimensions of the thoracic cage and occurs at which articulation?

Answer 8

Anterior-Posterior and height dimensions are increased

Articulation occurs at costovertebral joints

Question 9

The bucket-handle mechanism for breathing changes which dimensions of the TC and occurs at which articulations?

Answer 9

Transverse dimensions

Articulation at costovertebral and sternocostal

Question 10

Phrenic nerve comes from which spinal roots and innervate which muscle

Answer 10

C3,4,5 and innervate the diaphragm

Question 11

what are the 3 divisions of the diaphragm?

Answer 11

sternal, costal and lumbar

Question 12

What are the 3 openings of the diaphragm?

Answer 12

Aortic, Esophageal, Caval

Question 13

What nerves innervate the thorax?

Answer 13

intercostal nerves - run in inferior borded of intercostal space and innervate skin, intercostal muscles and provide sensory to parietal pleura

Question 14

Posterior intercostal vessels are from

Answer 14

Thoracic aorta and drain into azygos venous system

Question 15

Anterior intercostal vessels are from

Answer 15

subclavian (1st 6) and musculophrenic artery and drain into the internal thoracic vein