cardiovascular system-blood: coronary circulation

Question 1

coronary circulation supplies

Answer 1

blood to the myocardium

Question 2

how many coronary arteries are there

Answer 2

2

Question 3

what are the 2 coronary arteries

Answer 3

left coronary artery
right coronary artery

Question 4

the left and right coronary arteries originate at the

Answer 4

base of the ascending aorta at the aortic sinuses

Question 5

what ensures a continuous flow of blood in the coronary arteries

Answer 5

elevated blood pressure
elastic rebound

Question 6

right coronary artery supplies the

Answer 6

right atrium
portions of both ventricles
portions of SA and AV node
marginal artery
posterior interventricular artery

Question 7

the right coronary artery gives rise to

Answer 7

marginal arteries across the surface of the right ventricle and
posterior interventricular artery toward the apex within the interventricular sulcus

to supply interventricular septum and adjacent portions of the ventricle

Question 8

left coronary artery supplies

Answer 8

blood to the
left ventricle
left atrium
interventricular septum
circumflex artery
anterior interventricular artery

Question 9

at the anterior surface, the left coronary artery gives rise to

Answer 9

circumflex artery
anterior interventricular artery

Question 10

arterial anastomoses

Answer 10

in the anterior interventricular artery has small tributaries connected with the posterior interventricular artery

Question 11

cardiac veins supply

Answer 11

deoxygenated blood

Question 12

how many cardiac veins are there

Answer 12

3

Question 13

what are the 3 cardiac veins

Answer 13

posterior cardiac vein
middle cardiac vein
small cardiac vein

Question 14

posterior cardiac vein

Answer 14

draining the area served by circumflex artery
(left atrium, anterior left ventricle)

Question 15

middle cardiac vein

Answer 15

draining the area supplied by posterior interventricular artery
(posterior interventricular septum, adjacent portions of the right ventricle)

Question 16

small cardiac vein

Answer 16

drains blood from posterior surfaces of right atrium and right ventricle

Question 17

the 3 cardiac veins empty in to the

Answer 17

great cardiac vein

Question 18

the great cardiac vein opens

Answer 18

in to the right atrium near the base of inferior vena cava through the coronary sinus

Question 19

the anterior cardiac veins drain the

Answer 19

the anterior surface of the right ventricle, empty directly in to the right atrium

Question 20

pacemaker cells are in the

Answer 20

sino atrial node

Question 21

the sina atrial node is the

Answer 21

natural pacemaker of the heart

Question 22

the cardiac conduction system requires no

Answer 22

neural or hormonal stimulation and is called
automaticity

Question 23

if something happens to Bachmann’s Bundle

Answer 23

left atrium will not be able to relax/contract