Structure
How many chambers does the heart have?
4
What type of blood cells play a critical role in the transport of oxygen and carbon dioxide in the body?
Red blood cells
What is an ECG?
Electrocardio gram
What distingushes cardiac arrest from a heart attack
The heart stops beating in cardiac arrest
How do medical professionals typically hear the heart
A stethoscope
What are the lower chambers of the heart called
Ventricles
What is the role of the Heart Coverings
They protect against friction when the heart moves
what do ECGs record?
electrical impulses of the heart
What term refers to an abnormality of the heart rhythm?
Dysrhythmia
What is a heart murmur?
category of an abnormal heart sound (produces a swishing sound that can indicate incomplete closing of the valves or narrowing of them)
What are the upper chambers of the heart called
The Atria
What initiates the signal for the heart to pump
The SA node (Also known as the pacemaker)
what are the two of the ECG waves?
T wave, U-wave
What are contractions that occur before the next expected contraction in a series of cardiac cycles called?
Premature contractions
How many different heart sounds do you have?
4
How many distinct layers of tissue make up the heart wall
Three (The Epicardium, The Myocardium, and the Endocardium)
Which category of heart chambers require more force to pump out the blood (referred to as the primary pumping chambers)
The Ventricles (The lower chambers)
How does action potential effect the electrodes
swap the positive and negative impulses
What term is used to describe a very rapid heart rhythm?
Tachycardia
What heart sound lasts longer
first heart sound
What is the difference between veins and arteries
veins carry blood TOWARDS the heart
arteries carry blood AWAY FROM the heart
What do parietal structures supply?
they supply organs with blood
At the end of the action potential, the second electrode returns to what baseline?
zero
What term is used when you have a rapid heart rhythm?
Bradycardia
What type of people is an S3 (Third heart sound) normal in
children and thin young adults