posterior mediastinum

Question 1

region within the thorax between the left and right pulmonary cavities

Answer 1

mediastinum

Question 2

Pulmonary cavities include?

Answer 2

the lung within the pleural sac and the primary bronchus traveling into the lung

Question 3

division of the mediastinum occurs at?

Answer 3

the sternal angle (2nd costal cartilage)

Question 4

what structures are in the posterior mediastinum

Answer 4

• thoracic aorta and its branches
• azygos venous system
• thoracic duct
• esophagus
• vagus nerve
• sympathetic trunk and autonomic plexuses

Question 5

what does the thoracic aorta supply?

Answer 5

visceral and somatic structures in the thorax

Question 6

the aortic arch occurs within the?

Answer 6

superior mediastinum

Question 7

the trachea occurs within the?

Answer 7

superior mediastinum

Question 8

the border between the superior and inferior mediastinum occurs at

Answer 8

the aortic arch

Question 9

first branch off of the thoracic aorta is the? what do they supply

Answer 9

bronchial arteries; lung parenchyma and bronchial branches

Question 10

what is coming of the anterior aspect of the esophagus?

Answer 10

esophageal arteries

Question 11

what is the last branch of the thoracic aorta? what do they supply?

Answer 11

posterior intercostal arteries; supplies the intercostal muscles

Question 12

what veins drain posterior intercostal veins in the thorax and lumbar veins in the abdomen

Answer 12

azygos venous system

Question 13

the right side of the azygos vein contains? what is it draining?

Answer 13

on the right is the main azygos vein; it drains the right posterior intercostal vein

Question 14

on the left side of the azygos system contains what? what is it draining?

Answer 14

hemiazygos vein- drains the more inferior posterior intercostal veins

accessory hemiazygos veins that drain the more superior posterior intercostal veins

Question 15

how do you find hemiazygos and accessory hemiazygos veins?

Answer 15

look for veins that are crossing midline and draining into the azygos system

Question 16

the azygos vein is going to take all of the thoracic blood and drain into?

Answer 16

the superior vena cava

Question 17

the hemiazygos vein on the left and the azygos vein on the right are continuous with?

Answer 17

the ascending lumbar veins which connect to the lumbar veins of the abdomen

Question 18

lumbar veins are connected to?

Answer 18

inferior vena cava

Question 19

azygos veins do not have (blank) which allows blackflow

Answer 19

valves

Question 20

what is the main lymphatic vessel for the body

Answer 20

thoracic duct

Question 21

the thoracic duct drains lymph from

Answer 21

the lower limbs, the abdomen and left side of the thorax, upper limb, and head

Question 22

the thoracic duct drain into the venous system at?

Answer 22

the left venous angle where the left internal jugular vein and left subclavian come together to form the left brachiocephalic vein

Question 23

the right lymphatic duct only drains

Answer 23

the right side of the head and neck, right upper limb and right thorax

Question 24

the right lymphatic duct drains into the venous system at>

Answer 24

the right venous angle- the right internal jugular and the right subclavian forming the brachiocephalic vein

Question 25

where can you find the thoracic duct?

Answer 25

between the azygos vein and thoracic aorta

Question 26

muscular tube between the pharynx and stomach

Answer 26

esophagus

Question 27

what supplies and drains the esophagus?

Answer 27

the esophagus is supplied by the thoracic aorta and drained by the azygos system in the mediastinum

Question 28

the esophagus is innervated by?

Answer 28

left (anterior) and right(posterior) vagus nerves

some contributions from thoracic splanchnic nerves

Question 29

esophageal plexus provides

Answer 29

visceral motor innervation to the esophagus

Question 30

vagal trunk spread out and innervate

Answer 30

the abdomen