Chapter 19 - A&P2

occlusive thrombus

A blood clot attached to the wall of a blood vessel that completely blocks the flow of blood in that vessel is called a(n) __________.

higher than normal

A patient who has a resting heart rate of 120 bpm and a resting stroke volume of 70 mL has a cardiac output that is ______.

inferior lobe of the left lung

The apex of the heart rests in the cardiac notch, a depression in the _________________.

isovolumic contraction

The cardiac cycle consists of a distinct relaxation and contraction phase. Which term is typically used to refer to ventricular contraction while no blood is being ejected?

afterload

The force the heart must overcome to pump blood is known as ________.

calcium

The influx of which ion accounts for the plateau phase?

The ventricles are beginning to contract.

The peak of the R wave in an EKG indicates which event?

aggultination

The process in which antibodies attach to antigens, causing the formation of masses of linked cells, is called ________.

endocardium

The tissue layer of the heart that is in direct contact with circulating blood is the __________________.

sinoatrial node - atrioventricular node - bundle of His - atrioventricular bundle branches - Purkinje fibers

Trace the path of an electrical impulse in the heart, starting with the clump of cells known as the pacemaker.

ventricular repolarization

Ventricular relaxation immediately follows ________.

it increases

What happens to preload when there is venous constriction in the veins?

the heart and blood vessels

What is the cardiovascular system made of?

They support the synchronized contraction of the heart muscle.

What is the importance of intercalated discs in cardiac muscle?

cardiovascular system

What system is responsible for transporting blood throughout the body?

second phase of ventricular systole

When ventricular pressure becomes greater than aortic pressure

atrial repolarization is masked by ventricular depolarization

Which portion of the ECG corresponds to repolarization of the atria?

mitral

Which valve separates the left atrium from the left ventricle?

Perfusion

delivery of blood per time per gram of tissue

adequate persfusion

sufficient delivery to maintain cells heath