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Heart Anatomy
Conducting System
Cardiac Output
Cardiac Cycle
Circulatory System
100

_____ occurs when the heart contracts and _____ occurs when the heart relaxed.

Systole; Diastole

100

The ____________ _____ generates 40-60 action potentials per minute.

Atrioventricular Node (AV)

100

The formula for cardiac output is...

Heart Rate + Stroke Volume = Cardiac Output

100

This term describes one complete contraction and relaxation of the heart.

The Cardiac Cycle

100

These blood vessels carry oxygenated blood away from the heart.

Arteries

200

________ blood from the ____ ____ enter the right atrium. 

Deoxygenated; Vena Cava 

200

These two types of cardiac muscle cells make up the heart’s electrical and mechanical systems.

Conducting and Contractile cells

200

This is the amount of blood pumped out of a ventricle with each contraction.

Stroke Volume

200

This phase of the cardiac cycle occurs when the heart chambers contract.

Systole

200

The middle layer of a blood vessel; responsible for vasodilation and vasoconstriction.

Tunica Media

300

Name the four heart valves.

Tricuspid (Right AV), Bicuspid (mitral/ Left AV), Pulmonary(Right Semilunar), and Aortic (Left Semilunar). 
300

This structure conducts impulses from the AV node to the bundle branches.

Bundle of His

300

This term refers to the amount of pressure required to open the semilunar valves.

Afterload

300

During this phase of ventricular systole, pressure rises and the AV valves close, but semilunar valves have not yet opened.

Isovolumetric Contraction

300

These small vessels connect arteries to capillaries and experience the greatest pressure drop.

Arterioles

400

The remnant of fetal circulation between the right and left atria found after birth.

Fossa Ovalis

400

In an ECG, the QRS complex represents this event.

Ventricular Depolarization

400

This refers to the amount of blood left in a ventricle after contraction.

End Diastolic Volume (EDV)

400

The P wave represents this part of the cardiac cycle on an EKG.

Atrial depolarization

400

These blood vessels contain valves that prevent backflow and ensure one-way flow toward the heart.

Veins

500

This structure collects deoxygenated blood from the coronary veins and drains it into the right atrium.

Coronary Sinus

500

This part of the conduction pathway spreads the wave of depolarization across the ventricles.

The Purkinje Fibers

500

This law states that stroke volume is proportional to the end-diastolic volume.
 

Frank-Starling Principle

500

This term describes the period when semilunar valves close and ventricles begin to relax before AV valves reopen.

Isovolumetric Relaxation

500

This network of small vessels provides blood supply to the outer walls of large arteries.

Vasa Vasorum