EXAM Questions Flashcards
- Which of the following is NOT true about the sinoatrial (SA) node?
a. It possesses overdrive suppression over the other autonomic cells
b. When the SA node becomes nonfunctional, the Purkinji fibers are the next fastest group of cells in the conducting pathway so they will assume the pacemaker activity
c. It sends the AP through the interatrial pathway
d. It sends the AP through the intermodal pathway
e. All of the above are true
b. When the SA node becomes nonfunctional, the Purkinji fibers are the next fastest group of cells in the conducting pathway so they will assume the pacemaker activity
- Which of the following is NOT true about Atropine?
a. The use will cause the heart rate to DECREASE
b. The use will cause the heart rate to INCREASE
c. It is a parasympatholytic
d. All of the above are true
a. The use will cause the heart rate to DECREASE
- During your clinical rotations, you are asked to monitor the ECG of the anesthesized patient. What is the animal’s heart rate when you counted 5 QRS complexes in the 3 seconds interval marker?
a. 120 beats/min
b. 115 beats/min
c. 110 beats/min
d. 100 beats/min
D. 100 beats/min
- Which of the following is true about the baroreceptor reflex?
a. It continuously generates action potentials in response to the ongoing pressure within the veins
b. It is the most important mechanism for long-term regulation of blood pressure
c. When there is a decrease in blood pressure, there will be an increase in the firing rate of the carotid sinus nerve
d. When there is a decrease in blood pressure, there will be a decrease in parasympathetic activity to the heart
d. When there is a decrease in blood pressure, there will be a decrease in parasympathetic activity to the heart
- Which of the following is NOT an effect of ANP?
a. It promotes the loss of sodium and water at the kidneys
b. It inhibits the secretion of ADH
c. It promotes the secretion of Aldosterone
d. It suppresses thirst
c. It promotes the secretion of Aldosterone
- When the capillary hydrostatic pressure is 25mmHg, interstitial hydrostatic pressure is 0mmHg, capillary oncotic pressure is 15mmHg, and interstitial oncotic pressure is 1mmHg, what is the net force of movement across the capillary?
a. 11mmHg favoring filtration
b. 11mmHg favoring reabsorption
c. 9mmHg favoring filtration
d. 9mmHg favoring filtration
a. 11mmHg favoring filtration
- Which of the following is an example that can lead to left-sided heart failure?
a. Chronic volume overload
b. Cardiac enlargement due to ventricular dilation with only minor hypertrophy
c. Pericardial constriction
d. All of the above
D. All of the Above
- What events can lead to peripheral edema and pulmonary congestion due to heart failure?
a. Vasodilation of the veins
b. Decreasing ADH
c. Increasing the release of renin
d. Decreasing the EDV
C. Increasing the release of renin
- What types of shock can cause a severe decrease in CO?
a. Severe hemorrhage
b. Septic shock
c. Anaphylactic shock
d. All of the above are examples of types of shock that can cause a severe decrease in CO
A. Severe hemorrhage
What Corresponds to the plateau phase of the AP.
ST Segment
Matching.
Ventricular depolarization
QRS Complex
Corresponds to the AV Node induction
PR Segment
Corresponds to the AP passing through the right atrium.
P Wave.
Ventricular Repolarization
T Wave
- Surfactant
a. Will reduce the surface tension in the alveolus
b. Will cause a “larger” change in pleural pressure to fill the alveoli than it would if surfactant was not present
c. Will cause a “smaller” change in pleural pressure to fill the alveoli than it would if surfactant was not present
d. Both “a” and “c”
e. None of the above
D. Both A and C