Structure and Function
This chamber receives deoxygenated blood from the body through the vena cavae
Right atrium
This vessel carries blood from the right ventricle to the lungs
Pulmonary artery
This term means contraction of the heart chambers.
Systole
The “lub” sound is caused by the closing of these valves.
Atrioventricular valves
This structure is the natural pacemaker of the heart
SA node
This is the force of blood pushing against artery walls
Blood pressure
This chamber has the thickest muscular wall because it pumps blood to the body.
Left ventricle
This vessel returns oxygenated blood from the lungs to the heart
Pulmonary vein
This term means relaxation of the heart chambers.
Diastole
The “dub” sound is caused by the closing of these valves.
Semilunar valves
This node recieves the impulse after the SA node fires
AV node
In a reading of 120/80, this number represents systolic pressure
120
These structures prevent the backflow of blood inside the heart
Blood from the body enters the heart through these two large veins
Superior and Inferior vena cavae
This explains why ventricular contraction is stronger than atrial contraction.
Ventricles must pump blood further distances (lungs and body)
This valve is also called the bicuspid valve.
Mitral valve
This tissue allows the heart to beat without nervous stimulation
Nodal tissue
High blood pressure is known as this term
Hypertension
This wall separates the left and right sides of the heart
Ventricular septum
This is the correct order of blood flow after blood leaves the right ventricle.
Pulmonary trunk → pulmonary arteries → lungs
If blood enters the ventricles but the atria do not contract properly first, what would happen to ventricular filling?
Reduced ventricular filling (less blood pumped out per beat)
These fibrous chords keep the AV valves from inverting.
Chordae tendinae
This machine records the electrical activity of the heart
an ECG
Low blood pressure is known by this term
Hypotension
This large artery carries oxygenated blood from the heart to the body
Aorta
This would happen if oxygenated and deoxygenated blood mixed inside the heart
Reduced oxygen delivery to body tissues
During the cardiac cycle, this is the main advantage of having a pause between contractions
Allowing the heart chambers to refill with blood/ensuring efficient pumping?
This valve lies between the right atrium and the right ventricle.
tricuspid valve
This is the device that may be used to help control the heartbeat if the SA node is not working properly.
An artificial pacemaker
This condition involves fatty plaque buildup that narrows arteries and raises blood pressure.
Atherosclerosis