Quiz 2 Flashcards
True or False.
Bradycardia is >60 beats/min
False
True or False.
Tachycardia is defined as >100 beats/min
True
True or False.
Systemic circulation involves the right side of the heart
False
True or False.
Blood is taken to the lungs from the left ventricle
False
True or False.
The SA node is the pacemaker of the heart and is found in the left atrium
False
True or False.
Endothelial cells make up the epicardium
False
True or False.
The thickest layer of the heart is the myocardium
True
True or False.
The pulmonary arteries carry deoxygenated blood
True
True or False.
The pulmonary veins carry oxygenated blood
True
True or False.
The right AV valve is also called the mitral valve
False
True or False.
The left AV valve is also called the bicuspid valve
True
True or False.
Normal heart rate is 70-80 beats/min
True
True or False.
Gap junctions keep cardiomyocytes from separating
False
True or False.
At -60mV, sodium channels open rapidly
False
True or False.
The RMP of the SA node is -60 volts
False
True or False.
SA node RMP is unstable
True
True or False.
Sympathetic stimulation decreases diastolic depolarization
False
True or False.
Potassium channels close at -60mV
True
True or False.
Pacemaker potential refers to “slow depolarization”
**False
True or False.
A cardiac cycle is 8 seconds
False
