Circulatory pathways

Question 1

Left side of the heart pumps blood into what circuit

Answer 1

systemic circuit

Question 2

right side of the heart pumps blood into which circuit

Answer 2

pulmonary circuit

Question 3

characteristics of the pulmonary circuit

Answer 3

short and low pressure

Question 4

characteristics of the systemic circuit

Answer 4

much longer and has higher resistance

Question 5

Major branches off the ascending aorta

Answer 5

R and L coronary arteries

Question 6

Major branches off the top aortic arch

Answer 6

brachiocephalic trunk, L common carotid artery, L subclavian artery

Question 7

Major branches off the descending aorta

Answer 7

all other systemic arteries

Question 8

Is blood oxygenated or deoxygenated in the pulmonary trunk

Answer 8

carries oxygen-poor blood from the right ventricle to the lungs

Question 9

Is blood oxygenated or deoxygenated in the pulmonary veins

Answer 9

carry oxygen rich blood from the lungs to left atrium

Question 10

What is the function of coronary circulation? Where do the coronary vessels exist on the surface of the heart?

Answer 10

exists in the epicardium

they are the functional blood supply to the myocardium

Question 11

Left coronary artery

Answer 11

serves the left side of the heart

Question 12

Anterior Interventricular Artery (Left Anterior Descending Artery) —Left coronary artery—

Answer 12

follows the anterior interventricular sulcus, supplies blood to the anterior walls of both ventricles + the interventricular septum

Question 13

Circumflex artery (left coronary artery)

Answer 13

supplies the left atrium and the posterior wall of the left ventricle

Question 14

Right coronary artery

Answer 14

serves the right side of the heart

Question 15

Right Marginal Artery (right coronary artery)

Answer 15

supplies the myocardium of the lateral right side of the heart

Question 16

Posterior Interventricular Artery (right coronary artery)

Answer 16

supplies the apex of the heart and the posterior ventricular walls

Question 17

Complete blockage of a coronary artery leads to tissue death

Answer 17

Myocardial Infarction

Question 18

When is the myocardium perfused – during ventricular systole or diastole?

Answer 18

ventricular diastole

Question 19

anastomosis

Answer 19

“cross-connection between adjacent channels”

Question 20

three major venous tributaries to the coronary sinus

Answer 20

Great Cardiac Vein
Middle Cardiac Vein
Small Cardiac Vein

Question 21

Great Cardiac Vein

Answer 21

from the anterior interventricular sulcuus

Question 22

Middle Cardiac Vein

Answer 22

from the posterior interventricular sulcus

Question 23

Small Cardiac Vein

Answer 23

from the right inferior margin

Question 24

coronary sinus

Answer 24

cardiac veins merge to form the coronary sinus and drains into the right atrium

Question 25

Angina Pectoris

Answer 25

thoracic pain caused by a fleeting deficiency in blood supply to myocardium

Question 26

Angina Pectoris (cause)

Answer 26

increased physical demands on the heart (exercise), stress induced spasms of the coronary arteries