AND ANSWERS
Please describe the pathway of the electrical conduction system of the heart. -
ANSWER>>Impulses arise in the SA node and travel through the atrial myocardium to the AV
node, then toward the ventricles to the bundle of His, through the left and right bundle
branches to the terminal branches, the Purkinje fibers.
___________ is the volume and pressure inside the ventricle at the end of diastole and is
determined by the amount of blood left in the ventricle after systole and the amount of blood
returning to the ventricle during diastole. - ANSWER>>Preload
___________ is the resistance to ejection of blood from the ventricle. - ANSWER>>Afterload
The difference between the systolic pressure and the diastolic pressure is known as mean
arterial pressure.
True
False - ANSWER>>False
Epinephrine is a very potent vasoconstriction hormone.
True
False - ANSWER>>True
Antidiuretic hormone mechanism and the renin-angiotensin-aldosterole sytem help to regulate
plasma volume by increasing water, sodium, and chloride retention.
True
False - ANSWER>>True
A systolic blood pressure greater than or equal to 140 mmHg or a diastolic blood pressure
greater than or equal to 90 mmHg would be classified as what stage of hypertension?
A. Stage 2
B. Stage 1
C. Hypertensive crisis
D. Normal - ANSWER>>A. Stage 2
, What disorder is characterized by attacks of vasospasms in the small arteries and arterioles in
the fingers and/or toes?
A. Raynaud Phenomenon
B. Intermittent claudication
C. Venous insufficiency
D. Burger Disease - ANSWER>>A. Raynaud Phenomenon
What are the nonmodifiable risk factors for Coronary Artery Disease? Select all that apply.
A. Male gender
B. Family history
C. Advanced age
D. Diabetes
E. Post-menopausal females
F. Hypertension
G. Dyslipidemia - ANSWER>>A. Male gender
B. Family history
C. Advanced age
E. Post-menopausal females
What is the condition characterized by coronary artery vasospasm that results in chest pain that
is often at rest and unpredictable?
A. Silent ischemia
B. Chronic angina
C. Unstable angina pectoris
D. Printzmetal angina - ANSWER>>D. Printzmetal angina
A transmural myocardial infarction will usually NOT result in ST segment elevation on ECG and
is termed a non-STEMI.