Podcast
Questions and Answers
What is the function of Ca++ binding to troponin in the heart?
What is the function of Ca++ binding to troponin in the heart?
What is the key purpose of the P wave in an electrocardiogram (ECG)?
What is the key purpose of the P wave in an electrocardiogram (ECG)?
Which component of an ECG is responsible for masking the repolarization of the atria?
Which component of an ECG is responsible for masking the repolarization of the atria?
What is the main role of an artificial pacemaker in cardiac physiology?
What is the main role of an artificial pacemaker in cardiac physiology?
Signup and view all the answers
If someone has a heart block, what type of interruption occurs in their heart's conduction pathway?
If someone has a heart block, what type of interruption occurs in their heart's conduction pathway?
Signup and view all the answers
Which region of the heart would fire at 80 - 100 times per minute if not for endocrine control?
Which region of the heart would fire at 80 - 100 times per minute if not for endocrine control?
Signup and view all the answers
What is the function of atria in the heart?
What is the function of atria in the heart?
Signup and view all the answers
Where is the pericardium located in the heart?
Where is the pericardium located in the heart?
Signup and view all the answers
Which structure connects the right ventricle to the pulmonary trunk?
Which structure connects the right ventricle to the pulmonary trunk?
Signup and view all the answers
What is the function of the great veins and arteries attached at the base of the heart?
What is the function of the great veins and arteries attached at the base of the heart?
Signup and view all the answers
Which layer of the heart produces lubricating fluid for smooth movement?
Which layer of the heart produces lubricating fluid for smooth movement?
Signup and view all the answers
What is the main function of auricles in the heart?
What is the main function of auricles in the heart?
Signup and view all the answers
Which layer of the heart is continuous with the lining of the blood vessels?
Which layer of the heart is continuous with the lining of the blood vessels?
Signup and view all the answers
What separates the atria from the ventricles in the heart?
What separates the atria from the ventricles in the heart?
Signup and view all the answers
What is the function of semilunar valves in the heart?
What is the function of semilunar valves in the heart?
Signup and view all the answers
Which chamber of the heart receives oxygenated blood from the pulmonary veins?
Which chamber of the heart receives oxygenated blood from the pulmonary veins?
Signup and view all the answers
What term describes the interconnections of blood vessels that allow blood to flow even if there is a partial blockage?
What term describes the interconnections of blood vessels that allow blood to flow even if there is a partial blockage?
Signup and view all the answers
Which type of cells in cardiac muscle initiate and propagate the action potential through the heart?
Which type of cells in cardiac muscle initiate and propagate the action potential through the heart?
Signup and view all the answers
What is the main function of desmosomes in cardiac muscle cells?
What is the main function of desmosomes in cardiac muscle cells?
Signup and view all the answers
Where is the sinoatrial (SA) node located in the heart?
Where is the sinoatrial (SA) node located in the heart?
Signup and view all the answers
What happens when Na+ channels close at +30mV in cardiac contractile cells?
What happens when Na+ channels close at +30mV in cardiac contractile cells?
Signup and view all the answers
What is the primary function of Purkinje fibers in cardiac conduction?
What is the primary function of Purkinje fibers in cardiac conduction?
Signup and view all the answers
How do semilunar valves close?
How do semilunar valves close?
Signup and view all the answers
What is T tubule distribution like in cardiac muscle cells?
What is T tubule distribution like in cardiac muscle cells?
Signup and view all the answers
