Podcast
Questions and Answers
What is the primary function of the cardiovascular system?
What is the primary function of the cardiovascular system?
- To circulate blood throughout the body (correct)
- To produce hormones
- To provide sensory perception
- To facilitate digestion
Which chamber of the heart is directed downward and toward the left?
Which chamber of the heart is directed downward and toward the left?
- Right ventricle
- Left ventricle (correct)
- Right atrium
- Left atrium
What is the approximate weight of the adult male heart?
What is the approximate weight of the adult male heart?
- 450 grams
- 600 grams
- 150 grams
- 300 grams (correct)
What type of tissue makes up the outer covering of the heart?
What type of tissue makes up the outer covering of the heart?
How many chambers does the human heart have?
How many chambers does the human heart have?
What is contained within the pericardial cavity?
What is contained within the pericardial cavity?
Which layer of the pericardium adheres to the heart itself?
Which layer of the pericardium adheres to the heart itself?
In what part of the thoracic cavity is the heart located?
In what part of the thoracic cavity is the heart located?
What is the primary function of veins in the circulatory system?
What is the primary function of veins in the circulatory system?
What is a characteristic of lymph compared to plasma?
What is a characteristic of lymph compared to plasma?
Which vessel drains lymph from the right arm and right side of the thorax?
Which vessel drains lymph from the right arm and right side of the thorax?
Where are lymph nodes predominantly located?
Where are lymph nodes predominantly located?
What role does the spleen play in the lymphatic system?
What role does the spleen play in the lymphatic system?
What is the primary function of the sinoatrial (SA) node in the heart?
What is the primary function of the sinoatrial (SA) node in the heart?
What are intercalated disks responsible for in cardiac muscle cells?
What are intercalated disks responsible for in cardiac muscle cells?
What occurs during atrial systole?
What occurs during atrial systole?
What follows atrial systole in the cardiac cycle?
What follows atrial systole in the cardiac cycle?
Which components are included in the conducting system of the heart?
Which components are included in the conducting system of the heart?
What is the role of T tubules in cardiac muscle cells?
What is the role of T tubules in cardiac muscle cells?
During which phase of the cardiac cycle does the first heart sound occur?
During which phase of the cardiac cycle does the first heart sound occur?
What is the duration of atrial systole in a cardiac cycle lasting 0.8 seconds?
What is the duration of atrial systole in a cardiac cycle lasting 0.8 seconds?
What characterizes the rapid ejection phase of ventricular systole?
What characterizes the rapid ejection phase of ventricular systole?
What does the electrocardiogram (ECG) measure in the heart?
What does the electrocardiogram (ECG) measure in the heart?
What is the duration of ventricular diastole in a cardiac cycle with a total time of 0.8 seconds?
What is the duration of ventricular diastole in a cardiac cycle with a total time of 0.8 seconds?
Which vessel closure produces the second heart sound?
Which vessel closure produces the second heart sound?
Which type of muscle fibers conduct impulses from the AV node to the ventricles?
Which type of muscle fibers conduct impulses from the AV node to the ventricles?
Which phase of ventricular diastole occurs first?
Which phase of ventricular diastole occurs first?
What happens during the isovolumetric contraction phase?
What happens during the isovolumetric contraction phase?
The third heart sound occurs during which part of the cardiac cycle?
The third heart sound occurs during which part of the cardiac cycle?
What is the primary function of arteries in the circulatory system?
What is the primary function of arteries in the circulatory system?
Which layer is NOT part of the three-layered structure of blood vessels?
Which layer is NOT part of the three-layered structure of blood vessels?
Which force acts to favor filtration in the capillaries?
Which force acts to favor filtration in the capillaries?
What structural feature distinguishes veins from arteries?
What structural feature distinguishes veins from arteries?
What happens to the walls of arteries during systolic flow?
What happens to the walls of arteries during systolic flow?
What are small veins that arise from the unification of capillaries called?
What are small veins that arise from the unification of capillaries called?
Which component increases hydrostatic pressure in capillaries?
Which component increases hydrostatic pressure in capillaries?
How do capillaries facilitate the exchange of substances?
How do capillaries facilitate the exchange of substances?
