Heart Flashcards
Mediastinum 4 divisions
Ant mediastinum = thymus
Middle mediastinum = heart
Post mediastinum = oesophagus, sympathetic chain, azygous system of veins)
Sup mediastium = great vessels
what are the great vessels of the heart located in the superior mediastinum
Aorta
Brachiocephalic artery
Left common carotid artery
Left subclavian artery
Superior vena cava
what is the thymus
Immune system organ
Found in the Anterior mediastinum behind the sternum
label this heart
what does the heart sit in
fibrous pericardial sac
what are the 2 layers of the fibrous pericardial sac
outer fibrous and inner serous (visceral and parietal)
what are the valves of the heart
Right = tricuspid valve and pulmonary valve
left = mitral/ bicuspid valve and aortic valve
what are the pectinate muscle in the heart
parallel muscular ridges in the walls of the atria of the heart
what are the papillary muscle in the heart
5 papillary muscles in the heart originating from the ventricular walls.
what are chordae tendinae
strong, fibrous connections between the valve leaflets and the papillary muscles
what great vessel provides blood to the head neck and right arm
brachiocephalic artery (first)
what great vessel provides blood to the head and neck
left common carotid artery (middle)
what great vessel provides blood to the left arm
left subclavian artery (left)
vertebral level of the heart
T5-T8
each vein
that contributes to the azygous system
azygos vein and its two main tributaries: the hemiazygos vein and the accessory hemiazygos vein.
