A&P theory 1300

Question 1

P Wave

Answer 1

Atrial depolarization

Question 2

PR interval

Answer 2

Start of atrial depolarization through start of ventricular depolarization

Question 3

QRS Complex

Answer 3

Ventricular depolarization / atrial repolarization; atrial repolarization not detected

Question 4

QT interval

Answer 4

Time needed for ventricular depolarization and repolarization

Question 5

T wave

Answer 5

Ventricular repolarization

Question 6

Systole

Answer 6

The chambers contract and eject blood

Question 7

Diastole

Answer 7

The chambers relax and fill with blood

Question 8

Heart Rate

Answer 8

The number of heart beats per minute.

Question 9

Stroke volume

Answer 9

The volume of blood ejected from the ventricles per beat.

Question 10

Cardiac output

Answer 10

The volume of blood ejected from the left ventricle per minute.

Question 11

End-diastolic volume (EDV)

Answer 11

End-diastolic volume (EDV) is the volume of blood in the right and/or left ventricle at end load or filling in (diastole) or the amount of blood in the ventricles just before systole.

Question 12

End-systolic volume (ESV)

Answer 12

End-systolic volume (ESV) is the volume of blood in a ventricle at the end of contraction, or systole, and the beginning of filling, or diastole.

Question 13

Atrial diastole

Answer 13

Atrial diastole
Chambers fill with blood returning to the heart

Question 14

Ventricular systole

Answer 14

Ventricular systole
Contraction moves blood through the semilunar valves

Question 15

Atrial systole

Answer 15

Atrial systole
Contractions moves some blood into a relaxed ventricle

Question 16

Ventricular diastole

Answer 16

Ventricular diastole
Relaxed chambers fill with blood flowing through the atrioventricular valves