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WorksheetsForm 4 Chapter 10 Heartbeat and Pacemaker
Total questions: 10
Worksheet time: 5mins
Cardiac muscle cells are...
neurogenic
myogenic
cherophobia
philophobia
What is the function of valves in the vein of leg?
To ensure that the muscle contracts and relax normally
To prevent blood flow back to the heart
To ensure that the blood flows in one direction to the heart
To maintain the blood pressure relatively low in vein
The contraction of cardiac muscles in the heart is initiated and coordinated by a cluster of cells called...
peacemaker
pacemaker
atrioventricular (AV) node
electrical signal
The first 'lub' sound is produced when...
the tricuspid valve closed
the semilunar valves closed
the tricuspid valve and the bicuspid valve closed
the mitral valve and aortic valve closed
The second 'dub' sound is produced when...
the tricuspid valve and the bicuspid valve closed
the semilunar valves closed
the bicuspid valve closed
the mitral valve and aortic valve closed
Cardiac muscles in the heart contract and relax rhythmically without receiving any impulse signals from the nervous system.
automatic
pumping
myogenic
palpitation
Which of the following is a natural pacemaker?
Purkinje fibers
Sinoatrial (SA) node
Atrioventricular (AV) node
Bundle of His
Which part of the heart exerts the highest pressure during heart beat?
Right atrium
Right ventricle
Left atrium
Left ventricle
This is a device used by doctors to monitor heartbeat and diagnosis for heart diseases. What is the device?
Electrolysis
Electromagnet
Electrocardiogram
Electron microscope
Which of the following is the correct order of electrical impulses in heart?
SA Node, AV Node, Bundle of His, Purkinje Fibers
AV Node, SA Node, Bundle of His, Purkinje Fibers
SA Node, Bundle of His, AV Node, Purkinje Fibers
AV Node, Bundle of His, Purkinje Fibers, SA Node,
