Podcast
Questions and Answers
What is the main function of the sarcoplasmic reticulum in muscle cells?
What is the main function of the sarcoplasmic reticulum in muscle cells?
- Storage of calcium (correct)
- Entry of extracellular calcium
- Release of extracellular calcium
- Generation of action potentials
Which event triggers the release of calcium from the sarcoplasmic reticulum?
Which event triggers the release of calcium from the sarcoplasmic reticulum?
- Ventricular repolarization
- Atrial depolarization (correct)
- Ventricular contraction
- Conduction through AV node
What percentage of calcium in muscle cells comes from the sarcoplasmic reticulum?
What percentage of calcium in muscle cells comes from the sarcoplasmic reticulum?
- 50-60%
- 30-40%
- 10-20%
- 80-90% (correct)
During which phase of the cardiac cycle do the ventricles relax?
During which phase of the cardiac cycle do the ventricles relax?
Which part of the heart's conduction system is responsible for conducting the excitation to the ventricles?
Which part of the heart's conduction system is responsible for conducting the excitation to the ventricles?
What is the role of the medulla oblongata in cardiac innervation?
What is the role of the medulla oblongata in cardiac innervation?
What is the formula to calculate Stroke Volume?
What is the formula to calculate Stroke Volume?
Which factor affects Stroke Volume by changing the length of muscle fibers?
Which factor affects Stroke Volume by changing the length of muscle fibers?
What is the main effect of increased contractility on Stroke Volume?
What is the main effect of increased contractility on Stroke Volume?
Which neurotransmitter is involved in Parasympathetic Control of heart rate?
Which neurotransmitter is involved in Parasympathetic Control of heart rate?
How do catecholamines affect heart function through sympathetic control?
How do catecholamines affect heart function through sympathetic control?
What anatomical structures form the 4 chambers of the heart during embryology?
What anatomical structures form the 4 chambers of the heart during embryology?
What adaptation is crucial in fetal heart circulation before birth?
What adaptation is crucial in fetal heart circulation before birth?
What is the function of the epicardium?
What is the function of the epicardium?
Which blood vessel supplies the anterior interventricular artery in coronary circulation?
Which blood vessel supplies the anterior interventricular artery in coronary circulation?
What do pacemaker cells in the heart do?
What do pacemaker cells in the heart do?
Which layer of the heart is responsible for the transportation of gases and nutrients?
Which layer of the heart is responsible for the transportation of gases and nutrients?
Where are the papillary muscles located in the heart?
Where are the papillary muscles located in the heart?
What causes Angina pectoris?
What causes Angina pectoris?
What is a characteristic of cardiac myocytes?
What is a characteristic of cardiac myocytes?
Which layer of the pericardium consists of parietal and visceral layers?
Which layer of the pericardium consists of parietal and visceral layers?
Hypotension is defined as blood pressure above 90/60mmHg.
Hypotension is defined as blood pressure above 90/60mmHg.
Anaphylactic shock is a type of Vascular Shock.
Anaphylactic shock is a type of Vascular Shock.
Vesicular transport is a method of Capillary Exchange involving the movement of molecules.
Vesicular transport is a method of Capillary Exchange involving the movement of molecules.
Hydrostatic Pressure in Capillary Exchange refers to the pressure of interstitial fluid.
Hydrostatic Pressure in Capillary Exchange refers to the pressure of interstitial fluid.
Colloid Osmotic Pressure involves the osmotic pressure of blood.
Colloid Osmotic Pressure involves the osmotic pressure of blood.
Angina Pectoris is derived from Latin words meaning heart and lungs.
Angina Pectoris is derived from Latin words meaning heart and lungs.
Electrocardiography refers to the study of heart sounds.
Electrocardiography refers to the study of heart sounds.
Valvuloplasty is a procedure specifically performed on veins.
Valvuloplasty is a procedure specifically performed on veins.
Arteritis refers to the inflammation of veins.
Arteritis refers to the inflammation of veins.
Phlebitis is a condition that affects arteries.
Phlebitis is a condition that affects arteries.
