Podcast
Questions and Answers
Which of the following factors can cause an increase in cardiac output?
Which of the following factors can cause an increase in cardiac output?
- Decreased blood pressure
- Decreased heart rate
- Increased heart rate (correct)
- Decreased stroke volume
What is the immediate role of baroreceptors in regulating blood pressure?
What is the immediate role of baroreceptors in regulating blood pressure?
- They sense changes in blood pressure and initiate efferent signaling to the brain
- They sense changes in blood pressure and initiate afferent signaling to the brain (correct)
- They sense changes in blood pressure and initiate afferent signaling to the heart
- They sense changes in blood pressure and initiate efferent signaling to the heart
Which part of the nervous system is responsible for slowing down heart rate?
Which part of the nervous system is responsible for slowing down heart rate?
- Parasympathetic nervous system (correct)
- Peripheral nervous system
- Central nervous system
- Sympathetic nervous system
Which part of the nervous system is responsible for increasing heart rate?
Which part of the nervous system is responsible for increasing heart rate?
What is the primary role of the brainstem in regulating cardiac output?
What is the primary role of the brainstem in regulating cardiac output?
Which of the following is tonically active?
Which of the following is tonically active?
What is the primary role of the baroreflex in maintaining homeostasis of mean arterial pressure (MAP)?
What is the primary role of the baroreflex in maintaining homeostasis of mean arterial pressure (MAP)?
Which of the following is responsible for regulating vascular resistance?
Which of the following is responsible for regulating vascular resistance?
Which of the following is sensed by baroreceptors to regulate blood pressure?
Which of the following is sensed by baroreceptors to regulate blood pressure?
What is the primary role of the vagus nerve in regulating heart rate?
What is the primary role of the vagus nerve in regulating heart rate?
Which of the following is the correct equation for mean arterial blood pressure (MAP)?
Which of the following is the correct equation for mean arterial blood pressure (MAP)?
What determines the blood flow in the systemic circulation?
What determines the blood flow in the systemic circulation?
What is the role of total peripheral resistance (TPR) in arterial pressure?
What is the role of total peripheral resistance (TPR) in arterial pressure?
What determines the cardiac output?
What determines the cardiac output?
What is stroke volume?
What is stroke volume?
What is heart rate?
What is heart rate?
What tends to be the case for small animals in terms of stroke volume and heart rate?
What tends to be the case for small animals in terms of stroke volume and heart rate?
What is the driving force for blood flow in the systemic circulation?
What is the driving force for blood flow in the systemic circulation?
Cardiac output is solely determined by changes in heart rate.
Cardiac output is solely determined by changes in heart rate.
An increase in oxygen demand during exercise leads to an increase in stroke volume.
An increase in oxygen demand during exercise leads to an increase in stroke volume.
Mean arterial blood pressure (MAP) is regulated by both the heart and blood vessels.
Mean arterial blood pressure (MAP) is regulated by both the heart and blood vessels.
Baroreceptors in the periphery sense changes in blood pressure.
Baroreceptors in the periphery sense changes in blood pressure.
The brainstem integrates input from the baroreceptors and CNS to regulate cardiac output.
The brainstem integrates input from the baroreceptors and CNS to regulate cardiac output.
Parasympathetic signaling through the vagus nerve increases heart rate.
Parasympathetic signaling through the vagus nerve increases heart rate.
Sympathetic signaling through the sympathetic trunk ganglion increases stroke volume.
Sympathetic signaling through the sympathetic trunk ganglion increases stroke volume.
Small animals tend to have higher stroke volume and lower heart rate.
Small animals tend to have higher stroke volume and lower heart rate.
Total peripheral resistance (TPR) plays a role in regulating arterial pressure.
Total peripheral resistance (TPR) plays a role in regulating arterial pressure.
The baroreflex is responsible for maintaining homeostasis of mean arterial pressure (MAP).
The baroreflex is responsible for maintaining homeostasis of mean arterial pressure (MAP).
True or false: The left ventricle generates pressure for the pulmonary circulation.
True or false: The left ventricle generates pressure for the pulmonary circulation.
True or false: High pressure in the large systemic arteries is linked to ventricular relaxation.
True or false: High pressure in the large systemic arteries is linked to ventricular relaxation.
True or false: The mean arterial blood pressure (MAP) is equal to cardiac output divided by total peripheral resistance.
True or false: The mean arterial blood pressure (MAP) is equal to cardiac output divided by total peripheral resistance.
True or false: Blood pressure in major arteries does not oscillate.
True or false: Blood pressure in major arteries does not oscillate.
True or false: The driving force for blood flow is determined by the absolute pressure.
True or false: The driving force for blood flow is determined by the absolute pressure.
True or false: Arterial pressure is determined by cardiac output multiplied by total peripheral resistance.
True or false: Arterial pressure is determined by cardiac output multiplied by total peripheral resistance.
True or false: Blood inflow into arteries increases arterial blood volume and lowers arterial pressure.
True or false: Blood inflow into arteries increases arterial blood volume and lowers arterial pressure.
True or false: Total peripheral resistance is determined by capillary flow and resistance of arteries.
True or false: Total peripheral resistance is determined by capillary flow and resistance of arteries.
True or false: Cardiac output is determined by stroke volume and heart rate.
True or false: Cardiac output is determined by stroke volume and heart rate.
