CVS Anatomy 1

Question 1

What are the 2 circulations in the circulatory system?

Answer 1

systemic and pulmonary

Question 2

Where does the aortic arch begin?

Answer 2

t4

Question 3

What are the 4 borders of the heart?

Answer 3

right, left, superior and inferior

Question 4

What makes up the right and left borders of the heart?

Answer 4

right is right atrium

left is left ventricle

Question 5

What makes up the superior and inferior borders of the heart?

Answer 5

superior is RA and LA, superior vena cava, aorta and pulmonary trunk

inferior is right ventricle mostly, left ventricle and right atrium

Question 6

What makes up the pericardium?

Answer 6

fibrous pericardium, serous pericardium - parietal pleura attached to that, visceral pleura attached to heart

Question 7

What is the fibrous pericardium made up of?

Answer 7

dense thick connective tissue.

Question 8

What does the left coronary artery split into and originate from?

Answer 8

origin is aorta. splits into anterior interventricular artery and circumflex artery

Question 9

What does the right coronary artery split into and originate from?

Answer 9

origin is aorta. longer than left - splits sooner into marginal artery and then posterior interventricular artery

Question 10

Which vessels anastamose and where?

Answer 10

at posterior interventricular septum. left anterior descending (LAD) from left coronary artery (LCA) and posterior descending artery (PDA) from right coronary artery (RCA)

right coronary artery and left circumflex artery

Question 11

What does the left anterior descending artery supply?

Answer 11

RV, LV and 2/3 interventricular septum

Question 12

What does the right coronary artery supply?

Answer 12

RA, RV, SA and AV nodes, 1/3 interventricular septum

Question 13

What is the venous drainage of the heart? (4)

Answer 13

3 main vessels - great cardiac vein, middle cardiac vein and small cardiac vein. also anterior cardiac veins

Question 14

Where does the great cardiac vein run?

Answer 14

alongside the left anterior interventricular artery

Question 15

Where does the middle cardiac vein run?

Answer 15

alongside the right posterior descending artery

Question 16

Where does the small cardiac vein run?

Answer 16

coronary sulcus between RV and LV

Question 17

Where do the coronary veins drain into?

Answer 17

great, middle and small coronary veins drain into coronary sinus, which drains into right atrium.
anterior cardiac veins drain directly into right atrium

Question 18

What is the function of the anterior cardiac veins?

Answer 18

to drain upper right ventricle anterior surface

Question 19

What nerves modulate intrinsic innervation and where to?

Answer 19

to SA node - sympathetic and vagus (parasympathetic)

Question 20

What nerve innervates the pericardium?

Answer 20

sympathetic and vagus (T1-T4) innervates visceral pleura

phrenic (C3-C5) innervates parietal and fibrous pericardium. pain.

Question 21

what does the left marginal artery supply?

Answer 21

LA and LV

Question 22

What does the right marginal artery supply?

Answer 22

right ventricle and apex

Question 23

What does the left circumflex artery supply?

Answer 23

left atrium and left ventricle