Heart (cardiac Cycle)

Question 1

cardiac Cycle (6)

Answer 1

1. Atrial Systole
2. Early Ventricular systole
3. Late ventricular systole
4. Early Ventricular Diastole
5. Atrial Diastole
6. Late Ventricular Diastole

Question 2

Corresponds with contraction of the atria

Atrial pressure: greater than ventricle

AV valves: open

Ventricles: blood volume increasing, eventually reaching the maximum they can hold (end diastolic volume, or EDV)

Answer 2

Atrial Systole

Question 3

Corresponds with contraction of the ventricles

Ventricular pressure: greater than atria, less than great vessels

Blood volume: constant at EDV

AV valves: closed

SL valves: closed

Answer 3

Early Ventricular Systole

Question 4

Ventricular pressure: greater than atria, greater than great vessels

Blood volume: decreasing as stroke volume (SV) is ejected, until residual end systolic volume (ESV) is left

AV valves: closed

SL valves: open

Answer 4

Late Ventricular Systole

Question 5

Corresponds to relaxation in ventricles

Ventricular pressure: greater than atria, less than great vessels

Blood volume: constant at ESV

AV valves: closed

SL valves: closed

Answer 5

Early Ventricular Diastole

Question 6

Atrial pressure: less than ventricles

Ventricular blood volume: decreasing

AV valves: open

Answer 6

Atrial Diastole

Question 7

Ventricular pressure: less than atria, less than great vessels

Ventricular blood volume: increasing through passive filing

AV valves: open

SL valves: closed

Answer 7

Late Ventricular Diastole

Question 8

Visually Represents the Relationship Between Electrical and Mechanical Heart Events

Answer 8

Winger’s Diagram

Question 9

amount of blood pumped by a ventricle in a period of time

Answer 9

cardiac output

Question 10

= difference between cardiac output at rest and during exercise

Answer 10

cardiac reserve

Question 11

= STROKE VOLUME (SV) x HEART RATE (HR)

Answer 11

Cardiac output