Podcast
Questions and Answers
Where is the base of the heart located?
Where is the base of the heart located?
- Inferior and medial to the apex
- Superior and medial to the apex (correct)
- Superior and lateral to the apex
- Inferior and lateral to the apex
Which chamber of the heart collects blood and pushes it into the lower chambers?
Which chamber of the heart collects blood and pushes it into the lower chambers?
- Right ventricle
- Left atrium (correct)
- Right atrium
- Left ventricle
Where does CO2 leave and O2 enter in the heart?
Where does CO2 leave and O2 enter in the heart?
- Aortic valve
- Pulmonary capillaries (correct)
- Superior vena cava
- Atrial septum
Which artery is the only one to carry deoxygenated blood?
Which artery is the only one to carry deoxygenated blood?
What is the function of auricles in the heart?
What is the function of auricles in the heart?
Which layer of the heart is the middle thickest layer consisting of muscle cells, nerve fibers, and blood vessels?
Which layer of the heart is the middle thickest layer consisting of muscle cells, nerve fibers, and blood vessels?
During the cardiac cycle, which phase is characterized by the pumping of blood into circulation?
During the cardiac cycle, which phase is characterized by the pumping of blood into circulation?
What is the function of an artificial pacemaker in the heart?
What is the function of an artificial pacemaker in the heart?
Which component of the ECG represents the repolarization of ventricles?
Which component of the ECG represents the repolarization of ventricles?
What is the primary function of an AED (Automated External Defibrillator) in cardiac emergencies?
What is the primary function of an AED (Automated External Defibrillator) in cardiac emergencies?
Which phase of the cardiac cycle marks the relaxation of the ventricles and closing of semilunar valves?
Which phase of the cardiac cycle marks the relaxation of the ventricles and closing of semilunar valves?
What term is used to describe the amount of blood pushed out by the ventricles during each contraction?
What term is used to describe the amount of blood pushed out by the ventricles during each contraction?
What happens at 0mV in the heart?
What happens at 0mV in the heart?
What is the main purpose of the long refractory period in the heart?
What is the main purpose of the long refractory period in the heart?
Which node would fire 80-100 times per minute if not for endocrine control?
Which node would fire 80-100 times per minute if not for endocrine control?
What is the abbreviation for 'Electrocardiogram'?
What is the abbreviation for 'Electrocardiogram'?
What do electrodes placed on the body during an ECG record?
What do electrodes placed on the body during an ECG record?
Which layer of the heart is responsible for releasing endothelins, strong vasoconstrictors?
Which layer of the heart is responsible for releasing endothelins, strong vasoconstrictors?
What is the function of the atrioventricular valves?
What is the function of the atrioventricular valves?
What structure divides the heart into chambers and is a physical extension of the myocardium?
What structure divides the heart into chambers and is a physical extension of the myocardium?
Which event causes the 'lub' sound in a heartbeat?
Which event causes the 'lub' sound in a heartbeat?
Which valve separates the left atrium from the left ventricle?
Which valve separates the left atrium from the left ventricle?
What does an ejection fraction measure?
What does an ejection fraction measure?
What term describes the blood vessel interconnections that allow blood to flow even if there is a partial blockage?
What term describes the blood vessel interconnections that allow blood to flow even if there is a partial blockage?
How does exercise affect stroke volume?
How does exercise affect stroke volume?
Which cells in the heart conduct impulses and contract to pump blood through the body?
Which cells in the heart conduct impulses and contract to pump blood through the body?
What is the function of the vagus nerve in heart rate regulation?
What is the function of the vagus nerve in heart rate regulation?
What structure in the heart sets the normal cardiac rhythm and is known as the pacemaker?
What structure in the heart sets the normal cardiac rhythm and is known as the pacemaker?
Which factor can decrease heart rate?
Which factor can decrease heart rate?
What is the total time from initial impulse to ventricle depolarization in the heart?
What is the total time from initial impulse to ventricle depolarization in the heart?
What happens when there is less filling time in the heart?
What happens when there is less filling time in the heart?
Which ions are responsible for creating the spontaneous depolarization in cardiac conductive cells?
Which ions are responsible for creating the spontaneous depolarization in cardiac conductive cells?
When do the 4 chambers of the heart complete their development?
When do the 4 chambers of the heart complete their development?
What happens during the plateau phase of cardiac contractile cells?
What happens during the plateau phase of cardiac contractile cells?
What causes a heart murmur?
What causes a heart murmur?
What do gap junctions in cardiac muscle cells allow for?
What do gap junctions in cardiac muscle cells allow for?
What is the function of S2 in a heartbeat?
What is the function of S2 in a heartbeat?
