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Cardiovascular System: ECGs, Cardiac Arrhythmias, & Arterial & Venous Systems,

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

#1
Front (Question)

What are the components of the ECG? The P wave represents depolarization of the atria on an ECG. This is followed by the QRS interval, which |

Back (Answer)

The P wave –> the QRS interval ———-> the ST segment —-> T wave ————-> U wave

#2
Front (Question)

P Wave

Back (Answer)

ECG - Represents atrial depolarization

#3
Front (Question)

QRS Interval

Back (Answer)

ECG - Represents ventricular depolarization

#4
Front (Question)

ST Segment

Back (Answer)

ECG - Represents the period between ventricular depolarization and repolarization.

#5
Front (Question)

T Wave

Back (Answer)

ECG - Represents ventricular repolarization.

#6
Front (Question)

Elastic Arteries

Back (Answer)

Largest arteries (includes the aorta and major branches). Stretch when blood forced out of heart + recoil under low pressure.

#7
Front (Question)

Tunic Media

Back (Answer)

Middle layer of blood vessels; smooth muscle and elastic fibers, regulate vessel diameter. More elastin than any other vessels.

#8
Front (Question)

Cardiac arrhythmias

Back (Answer)

Abnormal heart beats; damage to the conduction system during major cardiac surgery or result of a myocardial infarction

#9
Front (Question)

Bradyarrhythmias

Back (Answer)

Abnormally slow pulse rates

#10
Front (Question)

Complete atrioventricular block (AV block)

Back (Answer)

Bradyarrhythmia: may be congenital or a response to surgical trauma. hypotension and decrease in oxygenation. |

#11
Front (Question)

What are 3 types of bradyarrhythmia

Back (Answer)

• Complete atrioventricular block (AV block) • Sinus bradycardia • Junctional/nodal rhythms hypotension and decrease in oxygenation. |

#12
Front (Question)

Sinus bradycardia

Back (Answer)

Bradyarrhythmia: caused by autonomic nervous system or hypotension and decrease in oxygenation.

#13
Front (Question)

Junctional/nodal rhythm

Back (Answer)

Bradyarrhythmia: occur post-surgical patients with no P wave.

#14
Front (Question)

Tachyarrhythmias

Back (Answer)

Abnormally fast pulse rates

#15
Front (Question)

Sinus tachycardia

Back (Answer)

Tachyarrhythmia: caused by fever and infection

#16
Front (Question)

Supraventricular tachycardia

Back (Answer)

Tachyarrhythmia (200-300 BPM) may have a sudden onset and result in congestive heart failure. heart failure.

#17
Front (Question)

Conduction irregularities

Back (Answer)

Type of cardiac arrhythmia; Post-operative insignificant irregular pulses

#18
Front (Question)

Premature contractions

Back (Answer)

Type of cardiac arrhythmia; may arise from the atria or ventricles.

#19
Front (Question)

What are the 3 layers of the walls of blood vessels?

Back (Answer)

• Tunica intima • Tunica media • Tunica adventitia

#20
Front (Question)

Tunica intima

Back (Answer)

Innermost wall of blood vessel

#21
Front (Question)

Tunica media

Back (Answer)

Middle wall of blood vessel; smooth muscle cells and elastic fibers

#22
Front (Question)

Tunica adventitia

Back (Answer)

Outermost wall of blood vessel

#23
Front (Question)

5 Types of Blood Vessels

Back (Answer)

• Elastic arteries • Muscular arteries • Arterioles • Venules • Veins

#24
Front (Question)

Elastic arteries

Back (Answer)

The aorta and major branches. 1. Largest vessels 2. Tunica media = more elastin than any other blood vessel 3. They STRETCH & Recoil