heart and the great vessels

Question 1

Where does the heart lay?

Answer 1

mainly behind the sternum but protrudes into the left hand side of the chest.

Question 2

what are the four corners of the heart used for?

Answer 2

this is where the stethoscope can be placed in order to hear that valve better than the other 3 valves.

Question 3

what is located in the first corner? describe the location.

Answer 3

the aortic valve. this is located at the 2nd intercostal space at the sternal margin.

Question 4

what is located in the second corner? describe the location.

Answer 4

the tricuspid valve. this is at the right sternal margin of the 5th intercostal valve.

Question 5

what is located at the third corner? describe the location.

Answer 5

the pulmanory valve. this is located at the second intercostal space at the left sternal margin.

Question 6

what is located at the fourth corner? describe the location.

Answer 6

the mitral valve. this is over the heart apex, the 5th intercostal space in line with the middle of the clavicaal

Question 7

what is the sternal margin?

Answer 7

the vertical line corresponding to lateral margin of the sternum.

Question 8

what is the right coronary artery?

Answer 8

originates above the right cusp of the aortic valve
travels down the right atriventricular groove, towards the crux of the heart.
branches into posterior interventricular artery and right marginal artery.

Question 9

what is the posterior interventricular artery?

Answer 9

runs in the posterior interventricular sulcus to the apex of the heart where it meets with the anteriorventricular artery.