Ch. 14 A & P

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1

How long does it take to complete an average cardiac cycle?

0.8 seconds

2

Which of these terms describes the volume of blood pumped by each ventricle in one minute?

Cardiac ouput

3

Which of the following is NOT a part of the conduction system of the heart?

Atrioventricular bundle, Atrioventricular valve, Purkinje fibers, or atrioventricular node.

Atrioventricular valve.

4

What is the function of a thrombolytic drug?

Dissolve blood clots.

5

What is the effect of the parasympathetic nervous system on the heart?

Decreases heart rate but not myocardial contraction strength.

6

What can happen when clots form in the coronary arteries?

Myocardial infarction

7

Which vein carries blood from the coronary circulation back into the right atruim?

Coronary sinus

8

What is the tetralogy of Fallot?

Four specific defects associated with congenital heart disease.

9

Which membranes are separated by the pericardial space?

The visceral and parietal layers of the serous pericardium.

10

Which heart chamber receives blood from the lungs?

Left atrium.

11

The autonomic nerve that slows the heartbeat is the _______________.

vagus nerve.

12

The sac that surrounds the heart is the ___________________________.

pericardium.

13

An abnormality in the rhythm of the heartbeat is a(n) ________________.

arrhythmia.

14

The medical term for high blood pressure is _________________.

hypertension.

15

One complete cycle of heart contraction and relaxation is called the _____________________.

cardiac cycle.

16

The fibrous threads connecting the AV valves to muscles in the heart wall are called the ___________________.

chordae tendinae.

17

The right atrioventricular valve is also known as the __________________.

tricuspid valve.

18

Normal heart sounds heard while the heart is working are called ____________________.

functional murmurs.

19

The small blood vessel connecting the pulmonary artery with the aorta that is found only in the fetus is the _____________________________.

ductus arteriosus.

20

The atrioventricular valves are closed during the phase of the cardiac cycle known as ventricular ________________________.

coronary sinus.

21

The circulatory system of the fetus has certain adaptations for the purpose of bypassing the _____________.

lungs.

22

A heart rate of 150 bpm is described as __________________.

tachycardia.

23

The aorta is part of the ____________________ circuit?

systemic

24

Heart disease caused by antibodies to streptococci is called ____________.

rheumatic heart disease.