Lecture 36 - Mediastinum and Heart

Question 1

a space between the lungs

Answer 1

mediastinum

Question 2

the mediastinum contains the

Answer 2

thoracic viscera

Question 3

upper compartment of the mediastinum

Answer 3

superior mediastinum

Question 4

boundaries of the superior mediastinum

Answer 4

superior - imaginary line from suprasternal notch to C7-T1 IVD
inferior - imaginary line from sternal angle to T4-5 IVD

Question 5

contents of superior mediastinum

Answer 5

thymus gland, brachiocephalic veins and superior vena cava, aortic arch, trachea, esophagus, termination of thoracic duct, vagus nerves, phrenic nerves, left recurrent laryngeal nerve

Question 6

boundaries of inferior mediastinum

Answer 6

superior - line from sternal angle to T4-5 IVD

inferior - diaphragm

Question 7

anterior compartment of inferior mediastinum contents

Answer 7

lower thymus, internal thoracic vessels, lymph nodes

Question 8

middle compartment of inferior mediastinum contents

Answer 8

heart/coronary vessels/pericardium, roots of great vessels, mainstem bronchi, arch of azygous vein, phrenic nerves

Question 9

posterior compartment of inferior mediastinum contents

Answer 9

thoracic aorta, continuation of esophagus, thoracic duct, vagus nerves, greater splanchnic nerve

Question 10

gives rise to the thoracic duct

Answer 10

cisterna chyli

Question 11

the hemiazygous and accessory hemiazygous veins are formed by the ___ as they join the ___

Answer 11

ascending lumbar veins, subcostal veins

Question 12

is the sympathetic chain in the mediastinum

Answer 12

no!

Question 13

azygous vein begins at the

Answer 13

aortic hiatus

Question 14

hemiazygous and accessory hemiazygous vein (left) begins at the

Answer 14

left diaphragmatic crus

Question 15

structures found in more than one division of the mediastinum

Answer 15

thoracic duct (sup & post), phrenic nerves (sup & mid), esophagus (sup & post), trachea (sup & mid), thymus gland (sup & ant)

Question 16

lies directly posterior to the heart and great vessels

Answer 16

esophagus

Question 17

descends anterior to the esophagus, then bifurcates at the sternal angle of louis

Answer 17

trachea

Question 18

tilted to the left, lies at the intersection of midclaviular line and 5th interspace

Answer 18

apex

Question 19

at third costal cartilage

Answer 19

base

Question 20

deep to the sternal body and along the edge of the right sternal margin

Answer 20

right margin

Question 21

separates right and left atriums

Answer 21

interatrial septum

Question 22

valve of the coronary sinus

Answer 22

thebesian valve

Question 23

valve of the inferior vena cava

Answer 23

eustachian valve