Podcast
Questions and Answers
Which of the following is true about the end of the P wave on an EKG?
Which of the following is true about the end of the P wave on an EKG?
- The atria are half depolarized
- The atria are completely depolarized (correct)
- The atria are completely repolarized
- The atria are mostly hyperpolarized
What is the dominant effect of activation of the vagal nerve (parasympathetic) on cardiac electrophysiology?
What is the dominant effect of activation of the vagal nerve (parasympathetic) on cardiac electrophysiology?
- Increased automaticity in the SA node
- Decreased conduction in the atria (correct)
- Decreased conduction in the Purkinje Fibers
- Decreased conduction in the AV node
Which ion movement would increase the slope of the pacemaker potential?
Which ion movement would increase the slope of the pacemaker potential?
- Increased outward movement of potassium
- Increased inward movement of calcium via L-type calcium channels (correct)
- Decreased inward movement of calcium via T-type calcium channels
- Decreased inward current through the HCN (funny) channel
During the isovolumetric contraction phase of the heart, what happens to blood flow in the left coronary artery?
During the isovolumetric contraction phase of the heart, what happens to blood flow in the left coronary artery?
Which of the following is true about veins?
Which of the following is true about veins?
Which symptom of angina is reported more frequently in women than in men?
Which symptom of angina is reported more frequently in women than in men?
According to the myogenic theory of autoregulation, what happens to arterial vascular smooth muscle in response to an increase in internal pressure?
According to the myogenic theory of autoregulation, what happens to arterial vascular smooth muscle in response to an increase in internal pressure?
Which of the following is a characteristic that is shared by both hard and soft coronary artery plaque?
Which of the following is a characteristic that is shared by both hard and soft coronary artery plaque?
Negative dp/dt is
Negative dp/dt is
A drug company is developing a new drug to act on the arterial vascular system. This drug increases the activity of myosin light chain phosphatase. It is expected that this drug will be used to
A drug company is developing a new drug to act on the arterial vascular system. This drug increases the activity of myosin light chain phosphatase. It is expected that this drug will be used to
A predominant effect of a small release of epinephrine from the adrenal medulla would be
A predominant effect of a small release of epinephrine from the adrenal medulla would be
Which of the following is a likely consequence of mild to moderate mitral stenosis?
Which of the following is a likely consequence of mild to moderate mitral stenosis?
A decrescendo-crescendo diastolic murmur would be consistent with
A decrescendo-crescendo diastolic murmur would be consistent with
Which of the following is a characteristic that is shared by both hard and soft coronary artery plaque?
Which of the following is a characteristic that is shared by both hard and soft coronary artery plaque?
Which of the following would be expected to DECREASE the amount of oxygen consumed by the heart?
Which of the following would be expected to DECREASE the amount of oxygen consumed by the heart?
The correct placement for the V1 precordial lead of the EKG is
The correct placement for the V1 precordial lead of the EKG is
Malnutrition is associated with the development of ascites, i.e. edema fluid in the abdominal cavity. A mechanism that contributes to this effect is
Malnutrition is associated with the development of ascites, i.e. edema fluid in the abdominal cavity. A mechanism that contributes to this effect is
An increase in arterial blood pressure from 130 to 190 mm Hg would be expected to produce a ________ in cerebral blood flow.
An increase in arterial blood pressure from 130 to 190 mm Hg would be expected to produce a ________ in cerebral blood flow.
Which of the following would increase vasoconstriction in vascular smooth muscle?
Which of the following would increase vasoconstriction in vascular smooth muscle?
A murmur heard during the diastolic phase of the cardiac cycle would be consistent with
A murmur heard during the diastolic phase of the cardiac cycle would be consistent with
One of the major effects of an increase in afterload on cardiac mechanics is
One of the major effects of an increase in afterload on cardiac mechanics is
Which of the following would be the most appropriate strategy to slow conduction of the cardiac action potential through the ventricle?
Which of the following would be the most appropriate strategy to slow conduction of the cardiac action potential through the ventricle?
Measurements taken in a typical continuous capillary indicate that plasma hydrostatic pressure is 32, plasma oncotic pressure is 27, interstitial hydrostatic pressure is -6 and interstitial osmotic pressure is 5. Under these conditions, there is a net
Measurements taken in a typical continuous capillary indicate that plasma hydrostatic pressure is 32, plasma oncotic pressure is 27, interstitial hydrostatic pressure is -6 and interstitial osmotic pressure is 5. Under these conditions, there is a net
An important factor contributing to the blister at the site of a burn is
An important factor contributing to the blister at the site of a burn is
In a continuous capillary, the net filtration pressure is determined by the difference between
In a continuous capillary, the net filtration pressure is determined by the difference between
Which of the following would increase the hydrostatic pressure in a capillary?
Which of the following would increase the hydrostatic pressure in a capillary?
Which of the following would decrease the oncotic pressure in a capillary?
Which of the following would decrease the oncotic pressure in a capillary?
Which of the following would increase the interstitial hydrostatic pressure?
Which of the following would increase the interstitial hydrostatic pressure?
Which of the following would decrease the osmotic pressure in a capillary?
Which of the following would decrease the osmotic pressure in a capillary?
Which of the following would increase the reabsorption pressure in a capillary?
Which of the following would increase the reabsorption pressure in a capillary?
