Podcast
Questions and Answers
Where is the heart located?
Where is the heart located?
- Cranial cavity
- Pelvic cavity
- Abdominal cavity
- Mediastinum of thoracic cavity (correct)
Which side of the heart pumps blood through miles of blood vessels in the body systemically?
Which side of the heart pumps blood through miles of blood vessels in the body systemically?
- Left side (correct)
- Both sides equally
- Neither side
- Right side
What is the function of the right side of the heart?
What is the function of the right side of the heart?
- Pumps blood to the brain
- Pumps blood through the body systemically
- Pumps blood to the digestive system
- Pumps blood through the lungs to pick up oxygen (correct)
In which direction is the apex of the heart pointed?
In which direction is the apex of the heart pointed?
Why is the heart described as a double pump?
Why is the heart described as a double pump?
Which blood vessels branch from the ascending aorta to supply oxygen-rich blood to the myocardium of the heart?
Which blood vessels branch from the ascending aorta to supply oxygen-rich blood to the myocardium of the heart?
What is the function of coronary capillaries in the heart?
What is the function of coronary capillaries in the heart?
Where do coronary veins collect oxygen-poor blood in the heart?
Where do coronary veins collect oxygen-poor blood in the heart?
What connects cardiac muscle fibers end-to-end?
What connects cardiac muscle fibers end-to-end?
Which type of muscle fibers form the cardiac conduction system?
Which type of muscle fibers form the cardiac conduction system?
What is the main function of contractile fibers in cardiac muscle tissue?
What is the main function of contractile fibers in cardiac muscle tissue?
Which chamber has thicker walls for pumping blood great distances throughout the body?
Which chamber has thicker walls for pumping blood great distances throughout the body?
What is the main function of atrioventricular valves in the heart?
What is the main function of atrioventricular valves in the heart?
Why do atrial walls have thinner walls compared to ventricular walls?
Why do atrial walls have thinner walls compared to ventricular walls?
What causes heart valves to open and close?
What causes heart valves to open and close?
Where do semi-lunar valves in the heart lie?
Where do semi-lunar valves in the heart lie?
What is the role of left ventricle in systemic circulation?
What is the role of left ventricle in systemic circulation?
What factor influences the forcefulness of contraction in the heart?
What factor influences the forcefulness of contraction in the heart?
Which of the following is NOT a factor that regulates and ensures equal pumping of blood by the right and left ventricles?
Which of the following is NOT a factor that regulates and ensures equal pumping of blood by the right and left ventricles?
In the context of heart function, what does the Frank-Starling law state?
In the context of heart function, what does the Frank-Starling law state?
Which of the following hormones plays a role in regulating heart rate?
Which of the following hormones plays a role in regulating heart rate?
Where is the origin of the nervous system regulation of heart rate?
Where is the origin of the nervous system regulation of heart rate?
Which factor is responsible for the pressure that must be exceeded before the semilunar valves open and ventricular ejection begins?
Which factor is responsible for the pressure that must be exceeded before the semilunar valves open and ventricular ejection begins?
During which phase does ventricular relaxation occur?
During which phase does ventricular relaxation occur?
Which wave represents the onset of ventricular depolarization in a normal ECG?
Which wave represents the onset of ventricular depolarization in a normal ECG?
What does the T wave in a normal ECG represent?
What does the T wave in a normal ECG represent?
What occurs during atrial systole?
What occurs during atrial systole?
Which process masks atrial repolarization on an ECG?
Which process masks atrial repolarization on an ECG?
In a normal ECG, what is the P wave associated with?
In a normal ECG, what is the P wave associated with?
