Surface anatomy of the heart Flashcards
Position of the heart valves Tricuspid Valve
opposite the 4th intercostal space.
Position of the heart valves Mitral Valve:
the medial end of the 4th left costal cartilage.
Position of the heart valves Aortic Valve
opposite the 3rd intercostal space
Position of the heart valves Pulmonary Valve
the medial end of the 3rd left costal cartilage and the adjoining part of the sternum
Tricuspid Valve Lies behind
the right half of the sternum opposite the 4th intercostal space.
Mitral Valve Lies behind
the medial end of the 4th left costal cartilage.
Aortic Valve Lies behind
the left half of the sternum
Pulmonary Valve Lies behind
the medial end of the 3rd left costal cartilage and the adjoining part of the
sternum
Where to listen for heart sound via The tricuspid valve
is heard just to the left of the lower part of the sternum near the 5th ICS.
Where to listen for heart sound via The mitral valve
is heard over the apex of the heart in the left 5th ICS at the midclavicular line
Where to listen for heart sound via The pulmonary valve
is heard over the medial end of the left 2nd ICS.
Where to listen for heart sound via The aortic valve
is heard over the medial end of the right 2nd ICS.
Superior Vena Cava (SVC) drains
(Superior & Middle Mediastinum)
Superior Vena Cava (SVC) Formation by union of
Rt & Lt Brachiocephalic veins, behind lower border of right 1st costal cartilage
Superior Vena Cava (SVC) Opens into
right atrium behind right 3rd costal cartilage
Inferior Vena Cava drains
(Posterior mediastinum)
Inferior Vena Cava passes through
vena caval opening of diaphragm
Inferior Vena Cava opens into
right atrium behind right 6th costal cartilage.
Ascending Aorta location
Middle Mediastinum
Ascending Aorta Origin
aortic orifice, at the base of left ventricle
Ascending Aorta End
ascends superiorly, forward & to the right & continues as arch of aorta at sternal angle.
Ascending Aorta Branches
Right & Left coronary arteries.
Pulmonary Trunk location
(Middle mediastinum)
Pulmonary Trunk Origin
from upper part of right ventricle, behind sternal end of left 3rd costal cartilage.
Pulmonary Trunk Course
ascends upward & to the left
Pulmonary Trunk divides into
Right pulmonary artery
Left pulmonary artery
Pulmonary Trunk divides at
at lower border of T4)
Right pulmonary artery runs
behind ascending aorta & SVC to enter root of right lung
Left pulmonary artery runs
in front of descending aorta to enter root of left lung.
Ligamentum arteriosum
It is important in embryonic circulation, when it is a patent vessel (the ductus arteriosus).
It connects the pulmonary trunk with the arch of the aorta and allows blood to bypass the
lungs during development.
The vessel closes soon after birth and forms the ligamentous connection observed in the
adult.
