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Quiz von Gillian13990, aktualisiert more than 1 year ago
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Erstellt von Gillian13990
vor etwa 9 Jahre
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Frage 1
Frage
It is important that the contraction of all the muscle cells of the heart wall is coordinated and synchronised so that the pumping action of the heart is both effective and efficient.
Antworten
- True
- False
Frage 2
Frage
The 'conducting (conduction) system' is made up of...
Antworten
-
cardiac veins and coronary arteries
-
small groups of specialised neuromuscular cells
Frage 3
Frage
What normally initiates the heartbeat?
Antworten
-
Internodal Pathways
-
SA (Sino-Atrial) Node
-
AV (Atrioventricular) Node
-
Bundle of His
Frage 4
Frage
Within which wall is the SA Node situated?
Antworten
-
left atrium
-
right atrium
-
left ventricle
-
right ventricle
Frage 5
Frage
There is a brief pause in the conduction of the impulse at the AV Node so that atrial contraction (and thus ventricular filling) is completed before ventricular contraction begins.
Antworten
- True
- False
Frage 6
Frage
The Bundle of His divides into how many branches?
Antworten
-
1
-
2
-
3
-
4
Frage 7
Frage
The order in which the heartbeat impulse moves is...
Antworten
-
Bundle of His, AV Node, SA Node, Bundle Branches, Purkinje Fibres
-
SA Node, Bundle of His, Purkinje Fibres, AV Node, Bundle Branches
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SA Node, AV Node, Bundle of His, Bundle Branches, Purkinje Fibres
Frage 8
Frage
Which areas of the heart contract first?
Antworten
-
Ventricles
-
Atria
Frage 9
Frage
Even though the SA Node normally initiates the heartbeat, the cells of the conducting system and of the heart muscle itself are also able to spontaneously depolarise and initiate a heartbeat.
Antworten
- True
- False
Frage 10
Frage
Which part of the conducting system is known as the 'pacemaker'?
Antworten
-
Bundle of His
-
SA Node
-
AV Node
-
Purkinje Fibres
Frage 11
Frage
The rhythm of the pacemaker is known as...
Antworten
-
sinus rhythm
-
circulatory rhythm
-
metabolised rhythm
Frage 12
Frage
The conducting system requires no external stimulus to initiate or coordinate the heartbeat - this means that the heart shows 'autorhythmicity'. It can only be modified or regulated by other inputs such as hormones and nervous inputs.
Antworten
- True
- False
Frage 13
Frage
What does the P wave stand for on an ECG?
Antworten
-
ventricular repolarisation
-
atrial repolarisation
-
atrial depolarisation
Frage 14
Frage
What does the 'QRS' complex stand for on an ECG?
Antworten
-
atrial depolarisation
-
atrial repolarisation
-
ventricular depolarisation
Frage 15
Frage
What does the T wave stand for on an ECG?
Antworten
-
atrial depolarisation
-
ventricular depolarisation
-
ventricular repolarisation
Frage 16
Frage
When the heart is in complete diastole (passive ventricular filling)...
Antworten
-
the atrioventricular valves are open, the semilunar valves are shut
-
the atrioventricular valves are shut, the semilunar valves are open
Frage 17
Frage
During passive ventricular filling how much blood enters the ventricles?
Antworten
-
30%
-
50%
-
70%
-
90%
Frage 18
Frage
During atrial systole, how much more blood enters the ventricles?
Antworten
-
20%
-
30%
-
40%
-
50%
Frage 19
Frage
During atrial systole...
Antworten
-
the atrioventricular valves are shut, the semilunar valves are open
-
the atrioventricular valves are open, the semilunar valves are shut
Frage 20
Frage
During ventricular systole...
Antworten
-
the atrioventricular valves are shut, the semilunar valves are open
-
the atrioventricular valves are open, the semilunar valves are shu
Frage 21
Frage
During atrial systole, does the pressure within the atria and ventricles...
Antworten
-
rise
-
fall
Frage 22
Frage
During ventricular diastole, the ventricular pressure is...
Antworten
-
higher than that in the systemic and pulmonary arteries
-
lower than that in the systemic and pulmonary arteries
Frage 23
Frage
During ventricular diastole...
Antworten
-
the semilunar valves are shut, the atrioventricular valves are open
-
the semilunar valves are open, the atrioventricular valves are shut
Frage 24
Frage
What is a typical heartbeat?
Antworten
-
60bpm
-
75bpm
-
80bpm
-
95bpm
Frage 25
Frage
How long does each cardiac cycle take to complete, according to the heartbeat in the previous question?
Antworten
-
0.2secs
-
0.4secs
-
0.6secs
-
0.8secs
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