Exam 20: The Heart

________ is when the heart can't maintain adequate cardiac output.(Note: Be sure to capitalize the first letter of your answer).

Calculate cardiac output if the heart rate is 125 beats/minute,the end-diastolic volume is 130 ml,and the end-systolic volume is 40 ml.

A faster-than-normal heart rate is called ________.

Stroke volume depends on

Figure 20-2 Cardiac Cycle Use Figure 20-2 to answer the following question: -What is occurring in the left atrium at the circle labeled "2" on the graph?

The long plateau phase of the cardiac muscle action potential is due to

Abnormally slow depolarization of the ventricles would most change the shape of the ________ in an ECG tracing.

The marginal branch and posterior interventricular branch are branches of the

Drugs that block the beta-one adrenergic receptors will

If the pacemaker cells in the SA node become more permeable to potassium ions,the

As the heart rate slows,________ gets longer.

The visceral pericardium is the same as the

An equivalent term for epicardium is ________.

The interventricular sulci and coronary sulcus

Activation of which kind of receptor causes heart rate to increase?

Put in correct order the sequence in which excitation would move through the conducting system of the heart: 1.Purkinje fibers 4. SA node 2)AV bundle 5. bundle branches 3)AV node

The ________ is shared by the two ventricles.

The two types of cardiac muscle cells involved in a normal heartbeat include specialized cells of the conducting system and ________ cells.

In a procedure known as balloon ________,an inflatable balloon at the end of a catheter is used to press plaque back against the vessel wall.

As the left ventricle contracts,it bulges into the ________.