Test
The Cardiovascular System - Conducting System, The Cardiac Cycle & The Electrocardiogram (ECG)
Preguntas del test (25)
1It 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.
- AVerdadero
- BFalso
2The 'conducting (conduction) system' is made up of...
- Acardiac veins and coronary arteries
- Bsmall groups of specialised neuromuscular cells
3What normally initiates the heartbeat?
- AInternodal Pathways
- BSA (Sino-Atrial) Node
- CAV (Atrioventricular) Node
- DBundle of His
4Within which wall is the SA Node situated?
- Aleft atrium
- Bright atrium
- Cleft ventricle
- Dright ventricle
5There 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.
- AVerdadero
- BFalso
6The Bundle of His divides into how many branches?
- A1
- B2
- C3
- D4
7The order in which the heartbeat impulse moves is...
- ABundle of His, AV Node, SA Node, Bundle Branches, Purkinje Fibres
- BSA Node, Bundle of His, Purkinje Fibres, AV Node, Bundle Branches
- CSA Node, AV Node, Bundle of His, Bundle Branches, Purkinje Fibres
8Which areas of the heart contract first?
- AVentricles
- BAtria
9Even 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.
- AVerdadero
- BFalso
10Which part of the conducting system is known as the 'pacemaker'?
- ABundle of His
- BSA Node
- CAV Node
- DPurkinje Fibres
11The rhythm of the pacemaker is known as...
- Asinus rhythm
- Bcirculatory rhythm
- Cmetabolised rhythm
12The 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.
- AVerdadero
- BFalso
13What does the P wave stand for on an ECG?
- Aventricular repolarisation
- Batrial repolarisation
- Catrial depolarisation
14What does the 'QRS' complex stand for on an ECG?
- Aatrial depolarisation
- Batrial repolarisation
- Cventricular depolarisation
15What does the T wave stand for on an ECG?
- Aatrial depolarisation
- Bventricular depolarisation
- Cventricular repolarisation
16When the heart is in complete diastole (passive ventricular filling)...
- Athe atrioventricular valves are open, the semilunar valves are shut
- Bthe atrioventricular valves are shut, the semilunar valves are open
17During passive ventricular filling how much blood enters the ventricles?
- A30%
- B50%
- C70%
- D90%
18During atrial systole, how much more blood enters the ventricles?
- A20%
- B30%
- C40%
- D50%
19During atrial systole...
- Athe atrioventricular valves are shut, the semilunar valves are open
- Bthe atrioventricular valves are open, the semilunar valves are shut
20During ventricular systole...
- Athe atrioventricular valves are shut, the semilunar valves are open
- Bthe atrioventricular valves are open, the semilunar valves are shu
21During atrial systole, does the pressure within the atria and ventricles...
- Arise
- Bfall
22During ventricular diastole, the ventricular pressure is...
- Ahigher than that in the systemic and pulmonary arteries
- Blower than that in the systemic and pulmonary arteries
23During ventricular diastole...
- A the semilunar valves are shut, the atrioventricular valves are open
- B the semilunar valves are open, the atrioventricular valves are shut
24What is a typical heartbeat?
- A60bpm
- B75bpm
- C80bpm
- D95bpm
25How long does each cardiac cycle take to complete, according to the heartbeat in the previous question?
- A0.2secs
- B0.4secs
- C0.6secs
- D0.8secs
Información
- Descripción
- Body Systems Test sobre The Cardiovascular System - Conducting System, The Cardiac Cycle & The Electrocardiogram (ECG), creado por Gillian13990 el 17/04/2015.
- Autor
- Gillian13990
- Idioma
- English
- Visitas
- 120
- Etiquetas
- Valoración
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