Show:
Basics
Anatomy
Conduction
Cardiac Cycle
Other
100
The heart is about the size of a ______________ and does/does not have the ability to beat on it's own if taken out of the body.
What is a closed fist, does have the ability
100
There are ____ chambers in the heart. The _______ are thick and the _____ are thin. Why are each thick/thin?
What is 4, ventricles are thick, atria are thin. Based on their function. Atria are thin because their function is to move blood to the ventricles.
100
This is the "pacemaker" of the heart
What is the sinoatrial node?
100
Systole means? Diastole means?
What is contraction, relaxation?
100
The definition of stroke volume is:
What is the amount of blood ejected by each ventricle during systole?
200
Myocardium means: ___________ and is situated between 2 layers.
What is the heart muscle, epicardium, endocardium.
200
These three vessels return blood to the heart:
What is the superior vena cava, inferior vena cava, coronary sinus?
200
The conduction system is needed because
What is it allows all cardiac chambers to be stimulated and contract in a coordinated manner?
200
An EKG is also called:
What is an electrocardiogram?
200
Cardiac output is determined by:
What is stroke volume and heart rate?
300
A thickening of the sarcolemma in cardiac muscle fibers allows the action potentials to travel quickly from one fiber to the next. This is called:
What is intercalated discs?
300
This valve is between the right atrium and the right ventricle and carries oxygenated/deoxygenated blood:
What is tricuspid valve, deoxygenated?
300
After the action potential is stimulated, what does it stimulate?
What is the atria?
300
Draw and label the different parts of the 1 cardiac cycle seen on an EKG. Include what each part means.
What is P, QRS, T
300
Cardiac output is defined as:
What is the amount of blood ejected per minute from the left ventricle into the aorta?
400
The __________ artery carries deoxygenated blood, the _________ vein carries oxygenated blood. One brings blood to the lungs, the other brings blood to the left ventricle.
Pulmonary arteries bring blood to lungs veins bring blood to left ventricle
400
This is a "pouchlike" structure in the atrium to increase the amount of blood that can be held in the atrium
What is an auricle?
400
The action potential travels throughout the heart to first contract the atria. After the SA node, where does the AP travel?
What is SA Node, AV Node, AV Bundle, Right and Left Bundle Branches, Purkinje Fibers?
400
The three phases of the cardiac cycle are and correlate with what on the EKG?
What is relaxation phase, atrial contraction, ventricular contraction? T, P, QRS?
400
This part of the brain contains the "cardiovascular center" and "fight or flight" is controlled by, which release norepinephrine and acetylcholine:
What is the medulla and sympathetic and parasympathetic fibers?
500
These things separate a ventricle from a ventricle and an atrium from an atrium. In the right atrium, in a fetus, this carries blood from _________ to ________. When a baby is born, it becomes the ____________ because:
What is a septum (interatrial, interventricular) The Foramen Ovale, Fossa Ovale - in a fetus, carries blood from R atrium to L atrium because lungs do not function. Foramen closes up to become Fossa Ovale.
500
This is the largest artery in the body
What is aorta?
500
At the AV node, the AP quickens rapidly/slows down?
What is slows down to allow the atria to contract first?
500
Stroke volume is regulated by 3 things:
What is 1. the degree of stretch, 2. the forcefulness of contraction of ventricular muscle fibers, 3. the pressure required to eject blood from ventricles?