Functioning of the Cardiovascular system

tachycardia

Tachycardia is a heart rate of more than 100 beats per minute at rest.

SA

Within the heart, areas of specialized tissue are important in the regulation and coordination of the hearts electrical activity (________ and AV nodes)

Poor diet

________, smoking, and physical inactivity are some factors that contribute to the development of coronary artery disease.

Coronary Circulation

________ The system of vessels that supply essential materials via blood to the heart muscle itself is called the ________.

ventricular septum

The ________ is the tissue that separates the two ventricles (the bundle of His, also known as the atrioventricular bundle)

atrioventrical node

The ________ (AV node) This is the specialized tissue that transmits the electrical signal from the atria into the ventricles and to a region that runs down the ventricular septum.

Coronary artery disease

________ (also known as atherosclerosis) involves a gradual narrowing of the coronary arteries resulting from the accumulation of hard deposits of cholesterol (plaque), on the lining of the blood vessels.

Bradycardia

________ is characterized by a heart rate of 60 beats per minute or less at rest, while tachycardia is a heart rate of more than 100 beats per minute at rest.

cardiovascular dynamics

During exercise, dramatic changes occur throughout the cardiovascular system (referred to as "________)

What is the other name of Coronary artery disease?

Atherosclerosis

What is the name of the dramatic changes that occur in the cardiovascular system?

Cardiovascular Dynamics

What are the factors that are considered when discussing cardiovascular dynamics?

• cardiac output (Q),
• blood pressure (BP),
• distribution of blood flow
• oxygen consumption (VO2).

What are some serious health repercussions that can happen if your blood vessels are narrowed or blocked?

Death, Heart Attack and Coronary Artery disease

what does the electrical stimulation of the heart do?

leads to the pumping of blood.

A lower heart rate is seen as a sign of?

Athletic or strong heart

what is a syncytium?

The cardiac muscle cells are excitable, meaning that with electrical stimulation they will all contract.

What does an electrocardiogram have?

PR interval, PR segment, QRS Complex, QT interval and ST Segment

How does a heart attack (a myocardial infarction) happen?

can result when blood flow to a section of the heart muscle becomes blocked due to plaque buildup or some other reason

What do the heart and the vessels do when you exercise?

The heart and the vessels constantly adapt to accommodate the ever-changing requirements of the body during exercise

What arteries are affected by coronary artery disease?

Left coronary artery, Right coronary artery , Right (acute) marginal artery , posterior descending artery, left anterior descending artery , diagonal arteries , left (obtuse) marginal artery and circumflex artery