Cardiac

Question 1

where is the base of the <3 located

Answer 1

2nd ICS

Question 2

ventricles relax & fill with blood; atria contract & finish filling blood to ventricles

Answer 2

diastole

Question 3

ventricular pressure builds closing valves

Answer 3

systole

Question 4

first <3 sound

Answer 4

closure of AV valves

Question 5

second <3 sound

Answer 5

closure of semilunar valves

Question 6

natural pacemaker of the <3

Answer 6

SA node

Question 7

sends signal to bundle of his

Answer 7

AV node

Question 8

muscle cells that transmit electrical impulses from the AV node to <3 muscles producing a beat

Answer 8

bundle of his

Question 9

electrical impulses sent causing ventricles to contract

Answer 9

purkinje fibers

Question 10

ability of the <3 to spontaneously generate and d/c impulse w/o need of a stimulus

Answer 10

automatacity

Question 11

the amount of blood ejected by the L vent in 1 contraction (70mL)

Answer 11

stroke volume

Question 12

the amount of blood ejected by the L vent in 1 min

Answer 12

cardiac output

Question 13

the stretched condition of the ventricular muscle at the end of diastole, just before contraction

Answer 13

preload

Question 14

the pressure against which the ventricle has to eject blood during a contraction

Answer 14

afterload