Blood flow and coronary circulation

Question 1

where does the superior vena cava receive blood from?

Answer 1

head, neck and upper limbs

Question 2

where does the inferior vena cave receive blood from?

Answer 2

everywhere but head, neck and upper limbs

Question 3

how does blood flow through the right side of the heart?

Answer 3

deoxygenated blood is received from both the superior and inferior VC, enters the right atrium, and is pumped via the tricuspid valve into the right ventricle, the right ventricle pumps blood into the pulmonary trunk via the pulmonary valve

Question 4

how does blood flow through the left side of the heart?

Answer 4

oxygenated blood is received in the left atrium via the pulmonary vein, blood flows through mitral valve from the left atrium to the left ventricle, blood is pumped out of the left ventricle via the aortic valve

Question 5

what are the two pacemaker systems?

Answer 5

sino-atrial node
atrioventricular node

Question 6

does the heart require a nerve supply?

Answer 6

no, it has an inherent rhythm

Question 7

what are the two major branches of the coronary arteries?

Answer 7

right and left

Question 8

where are the coronary arteries found in the heart?

Answer 8

circle the atrioventricular groove

Question 9

what are the first branches of the aorta?

Answer 9

coronary arteries, arise from the aortic sinuses

Question 10

what are the 2 main branches of the right coronary artery?

Answer 10

marginal and posterior interventricular

Question 11

what are the other 2 branches of the right coronary artery?

Answer 11

sinoatrial nodal and atrioventricular nodal

Question 12

what are the 2 main branches of the left coronary artery?

Answer 12

anterior interventricular and circumflex

Question 13

what are the other 2 branches of the left coronary artery?

Answer 13

diagonal and left marginal

Question 14

in which branch of the coronary artery would a blockage lead to a major MI?

Answer 14

left anterior interventricular (left anterior descending - LAD)

Question 15

what veins drain to the coronary sinuses?

Answer 15

great, middle and small cardiac veins

Question 16

which vein runs alongside the left coronary arteries?

Answer 16

great cardiac vein

Question 17

which vein runs alongside the posterior interventricular artery?

Answer 17

middle cardiac vein

Question 18

which vein runs alongside the right marginal artery?

Answer 18

small cardiac vein

Question 19

which veins drain directly into the right atrium?

Answer 19

anterior cardiac veins

Question 20

which veins drain directly into the right atrium?

Answer 20

anterior cardiac veins

Question 21

which veins drain into all chambers?

Answer 21

venae cordis minimae