Mediastinum and Heart

thymus

trachea

esophagus

mediastinum

area between the lungs containing the heart, aorta, venae cavae, esophagus, and trachea

superior mediastinum

Upper compartment of the thoracic cavity between thoracic inlet and T4

inferior mediastinum

lower compartment of the thoracic cavity between T5 and T9

aortic arch

brachiocephalic trunk

left common carotid artery

left subclavian artery

brachiocephalic veins

superior vena cava

phrenic nerve

vagus nerve

thoracic duct

major lymphatic vessel of the body

fibrous pericardium

outter pericardial layer; holds heart in the mediastinum and attached to to vessels off the heart and diaphragm

serous pericardium, parietal layer

outter layer of serous pericardium, attached to underside of fibrous pericardium

serous pericardium, visceral layer

inner layer of serous pericardium, attached to surface of heart

pectinate muscles

trabeculae carnae

pulmonary/semilunar valve

aortic/semilunar valve

left atrioventricular/bicuspid/mitral valve

right atrioventricular/tricuspid valve

chordae tendineae

papillary muscles

only found on the AV valves; contact during heart contraction to AV valves from opening

how semilunar valves close

back flow of blood down the pulmonary trunk and aorta

how AV valves open

blood flowing from the atriums into the ventricles

right coronary artery

right marginal artery/vein

Circumflex branch of left coronary artery

anterior interventricular branch

posterior interventricular branch

small cardiac vein

great cardiac vein

middle cardiac vein

coronary sinus

azygous vein

drains blood from thoracic region

sympathetic trunk

thoracic duct