PNB 2265 EXAM 2 EXAMPLE
QUESTIONS AND ANSWERS
What causes electrical contraction between the ventricles and the atria? - Correct
Answers -The cardiac skeleton
What happens during the fight or flight response? - Correct Answers -The LTCC (L type
calcium channel) is phosphorylated
Stroke volume decreases when: - Correct Answers -Neither the cardioinhibitory center
is activated and epinephrine is released from the cardiac nerve
During what phase of the cardiac cycle, the pressure inside of the left ventricle
decreases until it becomes equal to the pressure inside of the left atrium? - Correct
Answers -Early diastole
The inferior vena cava has a _____ radius than na arteriole and is under _______
pressure. - Correct Answers -larger, lower
Due to the law of laplace: - Correct Answers -neither:
aneurysms are more likely to develop in smaller vessels
tension is inversely proportional to vessel radius
what produces arteriole vasodilation? - Correct Answers --stimulation of beta adrenergic
receptors
-atrial natriuretic peptide
on the venous side of a systemic capillary ______ is greater than ______ and there is
net _________. - Correct Answers -osmotic pressure, hydrostatic pressure,
reabsorption
In order to decrease the resistance in a blood vessel by a factor of two, radius must
____ by a factor of ______. - Correct Answers -Increase, less than two
Marsha eats at a sushi restaurant she found on Groupon, and unknowingly ingests
tetradotoxin (a poison that inhibits voltage gated sodium channels). As a result: -
Correct Answers -Her heart stops beating
A patient with a non-functional AV node would not produce ventricular contractions: T/F
- Correct Answers -False
QUESTIONS AND ANSWERS
What causes electrical contraction between the ventricles and the atria? - Correct
Answers -The cardiac skeleton
What happens during the fight or flight response? - Correct Answers -The LTCC (L type
calcium channel) is phosphorylated
Stroke volume decreases when: - Correct Answers -Neither the cardioinhibitory center
is activated and epinephrine is released from the cardiac nerve
During what phase of the cardiac cycle, the pressure inside of the left ventricle
decreases until it becomes equal to the pressure inside of the left atrium? - Correct
Answers -Early diastole
The inferior vena cava has a _____ radius than na arteriole and is under _______
pressure. - Correct Answers -larger, lower
Due to the law of laplace: - Correct Answers -neither:
aneurysms are more likely to develop in smaller vessels
tension is inversely proportional to vessel radius
what produces arteriole vasodilation? - Correct Answers --stimulation of beta adrenergic
receptors
-atrial natriuretic peptide
on the venous side of a systemic capillary ______ is greater than ______ and there is
net _________. - Correct Answers -osmotic pressure, hydrostatic pressure,
reabsorption
In order to decrease the resistance in a blood vessel by a factor of two, radius must
____ by a factor of ______. - Correct Answers -Increase, less than two
Marsha eats at a sushi restaurant she found on Groupon, and unknowingly ingests
tetradotoxin (a poison that inhibits voltage gated sodium channels). As a result: -
Correct Answers -Her heart stops beating
A patient with a non-functional AV node would not produce ventricular contractions: T/F
- Correct Answers -False
