Podcast
Questions and Answers
The pulmonary circuit is supplied by both the right and the left sides of the heart.
The pulmonary circuit is supplied by both the right and the left sides of the heart.
True (A)
The systemic circuit contains oxygen-rich blood only.
The systemic circuit contains oxygen-rich blood only.
False (B)
Given a group of blood vessels, determine which one(s) belong(s) to the pulmonary circuit.
Given a group of blood vessels, determine which one(s) belong(s) to the pulmonary circuit.
Pulmonary arteries and pulmonary veins.
What is the location of the apex of the heart relative to the midline of the body?
What is the location of the apex of the heart relative to the midline of the body?
What are the names of the superior and inferior chambers of the heart?
What are the names of the superior and inferior chambers of the heart?
The right atrioventricular valve (tricuspid) regulates the opening between what chambers of the heart?
The right atrioventricular valve (tricuspid) regulates the opening between what chambers of the heart?
What heart valve(s) does oxygen-poor blood pass through?
What heart valve(s) does oxygen-poor blood pass through?
What valve regulates the flow of blood between the right ventricle and the vessels leading to the lungs?
What valve regulates the flow of blood between the right ventricle and the vessels leading to the lungs?
Where in the ventricles are the chordae tendineae of the AV valves anchored to?
Where in the ventricles are the chordae tendineae of the AV valves anchored to?
The inflow of what ions results in the pacemaker potential?
The inflow of what ions results in the pacemaker potential?
What is the value of the heart rate if the SA node is damaged?
What is the value of the heart rate if the SA node is damaged?
What is the source of the Ca²+ needed for myocardial contraction?
What is the source of the Ca²+ needed for myocardial contraction?
What is the cause of the first sound of the heart?
What is the cause of the first sound of the heart?
What is the cause of the second sound of the heart?
What is the cause of the second sound of the heart?
Define pulse pressure.
Define pulse pressure.
Define stroke volume.
Define stroke volume.
Define bradycardia.
Define bradycardia.
Define cardiac output.
Define cardiac output.
What is the value of blood pressure at the aorta and at the end of the vena cava?
What is the value of blood pressure at the aorta and at the end of the vena cava?
What is the effect of cutting the nerve supply to the heart on the heart rate?
What is the effect of cutting the nerve supply to the heart on the heart rate?
Flashcards
Pulmonary circuit heart supply
Pulmonary circuit heart supply
Pulmonary circuit is supplied by the right side of the heart only.
Systemic circuit blood composition
Systemic circuit blood composition
The systemic circuit contains both oxygen-rich and oxygen-poor blood. Oxygen-rich blood is in the arteries, and oxygen-poor blood is in the veins.
Heart apex location
Heart apex location
The apex is located to the left of the midline of the body.
Heart chamber names
Heart chamber names
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Tricuspid valve location
Tricuspid valve location
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Heart valves for oxygen-poor blood
Heart valves for oxygen-poor blood
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Pulmonary valve function
Pulmonary valve function
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Chordae tendineae anchor point
Chordae tendineae anchor point
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Pacemaker potential ions
Pacemaker potential ions
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Heart rate without SA node
Heart rate without SA node
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Calcium source for heart contraction
Calcium source for heart contraction
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Cause of the first heart sound
Cause of the first heart sound
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Cause of the second heart sound
Cause of the second heart sound
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Pulse pressure definition
Pulse pressure definition
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Stroke volume definition
Stroke volume definition
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Bradycardia definition
Bradycardia definition
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Cardiac output definition
Cardiac output definition
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Blood pressure extremes
Blood pressure extremes
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Cutting heart's nerve supply
Cutting heart's nerve supply
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Effect of heart nerve severance
Effect of heart nerve severance
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Study Notes
- Both the right and left sides of the heart supply the pulmonary circuit
- The systemic circuit contains oxygen-rich blood only
- You should be able to determine which blood vessels belong to the pulmonary circuit
- The apex of the heart is located to the left of the midline of the body
- The superior chambers of the heart are the atria, and the inferior chambers are the ventricles
- The tricuspid valve regulates the opening between the right atrium and the right ventricle
- Oxygen-poor blood passes through the tricuspid and pulmonary valves
- The pulmonary valve regulates blood flow between the right ventricle and the pulmonary artery (vessels leading to the lungs)
- The chordae tendineae of the AV valves are anchored to the papillary muscles in the ventricles
- The inflow of sodium ions results in the pacemaker potential
- If the SA node is damaged, the heart rate will be lower than normal
- The sarcoplasmic reticulum is the source of the Ca2+ needed for myocardial contraction
- The first heart sound is caused by the closing of the AV valves
- The second heart sound is caused by the closing of the semilunar valves
- Pulse pressure is defined as the difference between systolic and diastolic blood pressure
- Stroke volume is defined as the amount of blood ejected from the heart with each beat
- Bradycardia is defined as a heart rate below 60 beats per minute at rest
- Cardiac output is defined as the amount of blood pumped by the heart per minute
- Blood pressure at the aorta is relatively high, while it is relatively low at the end of the vena cava
- Cutting the nerve supply to the heart will increase the heart rate
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Description
Understanding the structure and function of the heart is essential in understanding the anatomy and physiology of the human body. This lesson covers the circulatory circuits, chambers, valves, and electrical conduction system of the heart. Essential concepts such as blood flow, heart rate regulation, and myocardial contraction are discussed.
