Podcast
Questions and Answers
What is the main function of the circulatory system?
What is the main function of the circulatory system?
- Pumping blood to the lungs and different organs of the body
- Regulating body temperature and producing antibodies
- Creating a defensive mechanism against external threats
- Transporting gases, waste products, and hormones (correct)
Which chamber of the heart receives blood from the lungs?
Which chamber of the heart receives blood from the lungs?
- Left atrium (correct)
- Right atrium
- Right ventricle
- Left ventricle
How many cusps are the Tricuspid and Semilunar valves formed of?
How many cusps are the Tricuspid and Semilunar valves formed of?
- 2 cusps
- 3 cusps (correct)
- 4 cusps
- 5 cusps
When does the mechanical contraction (systole) of cardiac muscle start in relation to depolarization?
When does the mechanical contraction (systole) of cardiac muscle start in relation to depolarization?
What is the duration of the relative refractory period (RRP) in relation to excitability?
What is the duration of the relative refractory period (RRP) in relation to excitability?
How long does the mechanical response last in relation to the duration of the action potential?
How long does the mechanical response last in relation to the duration of the action potential?
During which phase of the cardiac cycle does the supernormal phase of excitability coincide?
During which phase of the cardiac cycle does the supernormal phase of excitability coincide?
What are the automatic fibers involved in the transmission of electrical signals in the heart?
What are the automatic fibers involved in the transmission of electrical signals in the heart?
What is the speed of transmission in the A.V. node?
What is the speed of transmission in the A.V. node?
Which factor affects the force of myocardial contraction based on Starling’s Law?
Which factor affects the force of myocardial contraction based on Starling’s Law?
What is the period during which the ventricles contract, forcing blood out into the aorta and main pulmonary artery?
What is the period during which the ventricles contract, forcing blood out into the aorta and main pulmonary artery?
What is the physiological importance of A-V nodal delay?
What is the physiological importance of A-V nodal delay?
Which stimulation has a positive inotropic effect on the heart?
Which stimulation has a positive inotropic effect on the heart?
What is the volume of blood pumped by each ventricle per beat known as?
What is the volume of blood pumped by each ventricle per beat known as?
What is the function of the tricuspid valve in the heart?
What is the function of the tricuspid valve in the heart?
What coincides with the absolute refractory period (A.R.P) of the cardiac muscle?
What coincides with the absolute refractory period (A.R.P) of the cardiac muscle?
What is the main function of the left ventricle in the heart?
What is the main function of the left ventricle in the heart?
What is the relation between mechanical response and action potential in the cardiac muscle?
What is the relation between mechanical response and action potential in the cardiac muscle?
What is the relationship between relaxation (diastole) and repolarization in the cardiac muscle?
What is the relationship between relaxation (diastole) and repolarization in the cardiac muscle?
How many cusps are formed in the mitral valve of the heart?
How many cusps are formed in the mitral valve of the heart?
What is the period during which the ventricles relax and refill with blood known as?
What is the period during which the ventricles relax and refill with blood known as?
Which factor directly affects the force of myocardial contraction based on Starling’s Law?
Which factor directly affects the force of myocardial contraction based on Starling’s Law?
What is the volume of blood pumped by each ventricle per beat known as?
What is the volume of blood pumped by each ventricle per beat known as?
During which phase of the cardiac cycle does the supernormal phase of excitability coincide?
During which phase of the cardiac cycle does the supernormal phase of excitability coincide?
What does tachycardia (increased heart rate) have on the force of contraction?
What does tachycardia (increased heart rate) have on the force of contraction?
What is the speed of transmission in the A.V. node?
What is the speed of transmission in the A.V. node?
What are the physiological causes of A-V nodal delay?
What are the physiological causes of A-V nodal delay?
What is the main function of the circulatory system?
What is the main function of the circulatory system?
