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Questions and Answers
What is the formula for calculating cardiac output (CO) according to the text?
What is the formula for calculating cardiac output (CO) according to the text?
- CO = SV * HR (correct)
- CO = ESV - EDV
- CO = HR - SV
- CO = HR / SV
Which factor can increase HR by shortening repolarization according to the text?
Which factor can increase HR by shortening repolarization according to the text?
- Increasing calcium ions (correct)
- Acetylcholine
- Hypoxia
- Nicotine
What is the normal stroke volume for a 150 lbs individual based on the information provided?
What is the normal stroke volume for a 150 lbs individual based on the information provided?
- 90 ml
- 30 ml
- 50 ml
- 70 ml (correct)
How is ejection fraction (EF) calculated according to the information given?
How is ejection fraction (EF) calculated according to the information given?
What is the term used to describe the difference between maximum cardiac output (CO) and resting CO?
What is the term used to describe the difference between maximum cardiac output (CO) and resting CO?
Which neural stimulation decreases heart rate by releasing acetylcholine?
Which neural stimulation decreases heart rate by releasing acetylcholine?
Where is the heart located in the body?
Where is the heart located in the body?
Which statement is true about the pericardium?
Which statement is true about the pericardium?
What is the size of the heart compared to a human's body part?
What is the size of the heart compared to a human's body part?
Which type of athletes are likely to experience cardiac hypertrophy?
Which type of athletes are likely to experience cardiac hypertrophy?
What is the function of the pulmonary circuit?
What is the function of the pulmonary circuit?
Which chamber of the heart expels blood?
Which chamber of the heart expels blood?
What is the function of the atrioventricular valves in the heart?
What is the function of the atrioventricular valves in the heart?
Where are the papillary muscles located and what is their function?
Where are the papillary muscles located and what is their function?
What is the role of the SA node in the heart?
What is the role of the SA node in the heart?
Which element is responsible for causing the action potential (electrical current) in cardiac muscle?
Which element is responsible for causing the action potential (electrical current) in cardiac muscle?
During which phase of the cardiac cycle do semilunar valves close and atrioventricular valves remain closed?
During which phase of the cardiac cycle do semilunar valves close and atrioventricular valves remain closed?
What is the name for the volume of blood left in the heart that didn't get pumped out?
What is the name for the volume of blood left in the heart that didn't get pumped out?
What does an EKG with 10 electrodes provide that an EKG with fewer electrodes does not?
What does an EKG with 10 electrodes provide that an EKG with fewer electrodes does not?
What is the function of intercalated discs in cardiac muscle cells?
What is the function of intercalated discs in cardiac muscle cells?
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