WorksheetsQuiz on Cardiac Physiology
Total questions: 8
Worksheet time: 4mins
What is the function of the myocardium in the heart?
To store blood
To transmit electrical signals
To produce hormones
To filter waste
What is the term used to describe the ability of cardiac muscle cells to act as a single unit?
Syncytium
Myocardium
Sarcomere
Endocardium
Where is the sinoatrial node (SA node) located?
In the left ventricle
In the right atrium
In the aorta
In the pulmonary artery
What is the role of the sinoatrial node (SA node) in the heart?
To pump blood
To filter blood
To initiate electrical signals
To store oxygen
What is the function of the atrioventricular node (AV node)?
It initiates the heartbeat.
It transmits the electrical signal from the atria into the ventricles.
It measures the heart rate.
It pumps blood into the aorta.
What is the role of the bundle of His in the heart?
It separates the atria.
It forms the right and left bundle branches.
It initiates the electrical signal.
It measures blood pressure.
What is the normal heart rate initiated by the SA node without nervous system input?
50-60 beats per minute
60-70 beats per minute
70-80 beats per minute
80-90 beats per minute
What does an electrocardiogram (ECG) measure?
Blood pressure
Electrical activity of the heart
Oxygen levels in the blood
Heart muscle strength
