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2.3 Cardiac Cycle

Total questions: 20

Worksheet time: 12mins

Name
Class
Date
1.
Why are the walls of the left ventricle thicker than that of the right ventricle?
a)
The left ventricle must force blood into all the capillaries of the lungs 
b)
the left ventricle doesn't skip leg day
c)
This is false, the walls of the right ventricle are thicker
d)
Blood from the left ventricle is pumped throught the entire body 
2.
Receives oxygenated blood from the lungs
a)
Right Ventricle
b)
Left Ventricle
c)
Right Atrium
d)
Left Atrium
3.
A flap of tissue that prevents blood from flowing backward
a)
Aorta
b)
Atrium
c)
Septum
d)
Valve
4.
Receives blood from the body that is low in oxygen and high in carbon dioxide
a)
Right Atrium
b)
Right Ventricle
c)
Left Atrium
d)
Left Ventricle
5.
Pumps deoxygenated blood to the lungs
a)
Right Ventricle
b)
Right Atrium
c)
Left Ventricle
d)
Left Atrium
6.
An electrocardiogram measures what?
a)
The amount of pressure exerted on blood vessels.
b)
The electrical activity of the heart.
c)
How many times the heart contracts over time.
d)
The body's temperature caused by friction of blood in vessel.
7.

The entrance to the ascending aorta is guarded by

a)

an atrioventricular valve

b)

bicuspid valve

c)

semilunar valve

d)

tricuspid valve

8.

The opening of semilunar valves is due to

a)

increased ventricular pressure

b)

decrease ventricular pressure

c)

increased aortic pressure

d)

increase in artrial volume

9.

Which component of ECG cycle shows ventricular depolarisation?

a)

P

b)

QRS

c)

T

d)

U

10.

In the diagram below, which part of the tracing represents the contraction of the atria?

a)

P

b)

T

c)

R

d)

S

11.

This wave indicates repolarisation of ventricles

a)

T waves

b)

U waves

c)

P waves

d)

Q waves

12.

Diastole refers to what action?

a)

Passive filling

b)

Contraction

13.

Systole refers to what action?

a)

Passive filling

b)

Contraction

14.
The 'Lub' sound of the heart's LUB DUB? are the....
a)
Atrioventricular valves closing
b)
Semilunar Valves closing
c)
Blood flowing through the Pulmonary Trunk and Aorta
d)
Blood Flowing down into the venticles
15.
The 'Dub' sound of the heart's LUB DUB? are the....
a)
Atrioventricular valves closing
b)
Semilunar Valves closing
c)
Blood flowing through the Pulmonary Trunk and Aorta
d)
Blood Flowing down into the venticles
16.

Which of the following represents the Purkinje fibres?

a)

A

b)

B

c)

C

d)

D

17.

Which of the following represents the sino-atrial node?

a)

A

b)

B

c)

C

d)

D

18.

Which of the following represents the bundle of His?

a)

A

b)

B

c)

C

d)

D

19.

Which of the following represents the atrio-ventricular node?

a)

A

b)

B

c)

C

d)

D

20.

In which direction does an electrical impulse travel across the ventricles?

a)

Top to bottom

b)

Bottom to top

c)

Left to right

d)

Right to left

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