Gould's Test Bank Q's Flashcards
What actions causes the atrioventricular (AV) valves to close?
Increased intraventricular pressure
When stroke volume decreases, which of the following could maintain cardiac output?
Increased heart rate
Describe the pericardial cavity- it is a
It is a potential space containing a very small amount of serous fluid
Which factors greatly improves venous return to the heart during strenuous exercise?
Forceful action of the valves in the veins
The function of the baroreceptors is to:
signal the cardiovascular control center of changes in systemic blood pressure.
The normal delay in conduction through the AV node is essential for:
completing ventricular filling.
Increased heart rate and force of contraction is a result of increased secretion of :
epinephrine
Stimulation of the sympathetic nervous system causes increased:
heart rate
The cardiac reserve is:
the ability of the heart to increase cardiac output when needed.
The event that causes the QRS wave on an electrocardiogram (ECG) tracing is:
ventricular depolarization.
The term preload refers to:
volume of venous return.
The first arteries to branch off the aorta are the:
coronary arteries.
Cardiac output refers to:
the volume of blood ejected by a ventricle in one minute
Vasodilation in the skin and viscera results directly from:
relaxation of smooth muscle in the arterioles.
hydrochlorothiazide (HydroDIURIL) drug __________ sodium and fluid retention in the body?
decrease
Damaged blood vessel walls
Immobility
Prosthetic valves
are predisposing factors to ___________ formation in the circulation?
thrombus
acetylsalicylic acid (ASA) is a drug taken in small doses on a continuing basis to reduce ___________ adhesion
platelet
A partial obstruction in a coronary artery will likely cause:
angina attacks
Cigarette smoking is a risk factor in coronary artery disease because smoking:
promotes platelet adhesion.
The term arteriosclerosis specifically refers to: degeneration with loss of elasticity and obstruction in ____________________
small arteries.
A modifiable factor that increases the risk for atherosclerosis is:
leading a sedentary lifestyle.
An atheroma develops from:
accumulated lipids, cells, and fibrin where endothelial __________ has occurred.
injury
Low-density lipoproteins (LDL) promote ______________ development
atheroma
Factors that may precipitate an angina attack include all of the following EXCEPT:
eating a large meal.
engaging in an angry argument.
taking a nap.
shoveling snow on a cold, windy day.
taking a nap.