Podcast
Questions and Answers
What is responsible for the coordinated contraction of the Atria and Ventricles in the heart?
What is responsible for the coordinated contraction of the Atria and Ventricles in the heart?
- AV Node
- Bundle of His
- Intercalated Discs (correct)
- SA Node
Which part of the heart is responsible for the gradual depolarization known as 'Prepotential'?
Which part of the heart is responsible for the gradual depolarization known as 'Prepotential'?
- SA Node (correct)
- R & L Bundle Branches
- Purkinji Fibres
- AV Node
Which component allows action potentials to move from cell to cell in the heart?
Which component allows action potentials to move from cell to cell in the heart?
- Purkinji Fibres
- Gap Junctions (correct)
- Bundle of His
- Intercalated Discs
What leads to the opening of Ca2+ channels and influx of Ca+ in Conductile Cardiac Cell Physiology?
What leads to the opening of Ca2+ channels and influx of Ca+ in Conductile Cardiac Cell Physiology?
Which structure is part of the sequence of the Heart's Conduction System just before the Purkinji Fibres?
Which structure is part of the sequence of the Heart's Conduction System just before the Purkinji Fibres?
'Spontaneously Depolarises to Threshold' in cardiac cells is primarily due to:
'Spontaneously Depolarises to Threshold' in cardiac cells is primarily due to:
Which node in the heart sets the pace for the heart as a whole?
Which node in the heart sets the pace for the heart as a whole?
Where is the location of the AtrioVentricular (AV) Node in the heart?
Where is the location of the AtrioVentricular (AV) Node in the heart?
What is the normal resting heart rate maintained by the Parasympathetic Nervous System?
What is the normal resting heart rate maintained by the Parasympathetic Nervous System?
How long does it take for an action potential to reach the AtrioVentricular (AV) Node from the SinoAtrial (SA) Node?
How long does it take for an action potential to reach the AtrioVentricular (AV) Node from the SinoAtrial (SA) Node?
Which region of the heart contracts when stimulated by the SinoAtrial (SA) Node?
Which region of the heart contracts when stimulated by the SinoAtrial (SA) Node?
What does the Posterior Interventricular Sulcus separate?
What does the Posterior Interventricular Sulcus separate?
What does the Anterior Interventricular Artery supply?
What does the Anterior Interventricular Artery supply?
In which circulation does blood gain oxygen and lose carbon dioxide?
In which circulation does blood gain oxygen and lose carbon dioxide?
Which artery encircles the heart in the coronary sulcus?
Which artery encircles the heart in the coronary sulcus?
What is the significance of arteries lying in the epicardium in coronary circulation?
What is the significance of arteries lying in the epicardium in coronary circulation?
Which artery is also known as the Left Anterior Descending Artery (LAD)?
Which artery is also known as the Left Anterior Descending Artery (LAD)?
What is the role of the Bundle Branches in the heart's conduction network?
What is the role of the Bundle Branches in the heart's conduction network?
Where are the Purkinje Fibres located within the heart?
Where are the Purkinje Fibres located within the heart?
What is the nature of action potentials in the Bundle Branches compared to the AV & SA Nodes?
What is the nature of action potentials in the Bundle Branches compared to the AV & SA Nodes?
Which part of the myocardium do the Bundle Branches serve?
Which part of the myocardium do the Bundle Branches serve?
What is the significance of delaying impulses by the Atrioventricular (AV) Node?
What is the significance of delaying impulses by the Atrioventricular (AV) Node?
What differentiates Purkinje Fibres from other myocardial cells during impulse transmission?
What differentiates Purkinje Fibres from other myocardial cells during impulse transmission?
What does a positive deflection result in when a Depolarisation Wavefront moves toward a positive electrode?
What does a positive deflection result in when a Depolarisation Wavefront moves toward a positive electrode?
What is the significance of the P-wave in an ECG?
What is the significance of the P-wave in an ECG?
Why is only the negative deflection seen in the Q-Wave during an ECG?
Why is only the negative deflection seen in the Q-Wave during an ECG?
What is indicated by a negative deflection when a Depolarisation Wavefront moves away from a positive electrode?
What is indicated by a negative deflection when a Depolarisation Wavefront moves away from a positive electrode?
What does the PR-Segment reflect in an ECG reading?
What does the PR-Segment reflect in an ECG reading?
Why does a Depolarisation Wavefront moving perpendicular to a positive electrode create both positive and negative deflections?
Why does a Depolarisation Wavefront moving perpendicular to a positive electrode create both positive and negative deflections?
