Exam 20: The Heart

Which of these would cause stroke volume to increase?

"An increase in end-diastolic volume increases the stroke volume" is a way of stating

When a blood clot forms on a ruptured plaque in a coronary artery,the condition is referred to as a(n)

The right atrium receives blood from the

The connective tissue fibers of the myocardium

The structures responsible for distributing excitation to the contractile cells are ________.

Cardiac output can be increased by all of the following except one.Choose the exception.

The contraction phase of the cardiac cycle is called ________.

A procedure in which a length of the patient's vein or artery is used to create a detour around an obstruction in a coronary artery is called ________.

Cardiac cells damaged by infarction will show which of the following?

End-systolic volume is defined as the:

An increase in the rate of action potentials from baroreceptors will trigger a reflex to

Depolarization of the atria corresponds to the EKG's

The cusps (leaflets)of atrioventricular valves attach directly to

When the left ventricle contracts,the distance from the apex to the base

The muscle layer of the heart is the ________.

There are ________ pulmonary veins.

In cardiac muscle,the fast depolarization phase of the action potential is the result of

If there is a complete block between the SA node and the AV node,how would the ECG be affected?

The circumflex branch and the anterior interventricular artery are branches of the