These fast-conducting fibers spread the electrical signal throughout the ventricular wall
purkinje fibers
What medical term is used to describe a heart rate that is greater than 100?
tachycardia
What is the difference between systole and diastole?
systole- squeeze of heart; diastole- refilling/resting
Which type of blood vessel connects arteries with capillaries?
arterioles
Which valves are semilunar valves?
pulmonary valve and aortic valve
The amount of blood pumped out of the heart in one minute is called the:
cardiac output
The sling-like structure that surrounds and supports the heart is called the:
pericardium
Define stroke volume
amount of blood pumped out of the ventricle with each beat
What is the "good" type of cholesterol?
HDL
Cardiac output is a product of ______ X _______
heart rate/ stroke volume
The right side of the heart is concerned with _____ circulation, while the left side deals with ________ circulation
pulmonary, systemic
Which structure separates the right atria from the right ventricle?
tricuspid valve
The myocardium is thickest in this chamber
left ventricle
What is an infarct?
localized area of necrotic tissue
The normal pacemaker of the heart is the______________
SA node
What does the P wave on an EKG represent?
atrial depolarization
What is the only artery in the body that carries deoxygenated blood?
pulmonary artery
This is the term for a heart beat that originates from outside the SA node
ectopic beat
What is the name of the shortcut within fetal circulation which shunts blood directly from the pulmonary artery to the aorta, thereby bypassing the lungs?
ductus arteriosus
Which segment on an EKG represents ventricular depolarization?
QRS segment
Which great vessel sends oxygenated blood out to the body?
the aorta
The medical term for chest pain is:
angina
The actual exchange of O2 and CO2 at the cellular level occurs in these tiny blood vessels:
capillaries
The coronary arteries branch off of the:
aorta
Which part of the elec. cond. system slows the electrical signal as it moves from the atria to the ventricles?
AV node
Which condition occurs when the atria do not have a coordinated systole, only quivering uselessly?
atrial fibrillation
An increase in the strength of myocardial contraction that occurs without stretching the heart is known as:
+ inotropic effect
Your patient has left-sided CHF. Where does the blood back up into (where is the congestion)?
the lungs
Name 2 blood vessels associated with the heart that "see" only deoyxgenated blood
vena cava and pulmonary artery
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