Exam 20: The Heart

The ________ is the difference between the resting and maximal cardiac output.

There are ________ pulmonary veins.

The term used to describe fluid collecting in the pericardial cavity that restricts the movement of the heart is known as

The bicuspid or mitral valve is located

The first blood vessels to branch from the aorta are the ________ arteries.

As blood leaves the right ventricle, it passes through the ________ and then into the pulmonary trunk.

The pulmonary veins carry blood to the

Figure 20-2 Cardiac Cycle Use Figure 20-2 to answer the following questions: -What occurs at "A" on the graph?

As a result of the long refractory period in the cardiac action potential, cardiac muscle cannot exhibit

The coronary sulcus is a groove that

The basic heartrate established by the SA node is called the

Cardiac output is increased by

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

The earlike extension of the atrium is the

Prominent muscular ridges in the anterior atrial wall and auricles are called

The ________ is an important ridge of muscle extending horizontally around the right ventricle from theinterventricular septum to the base of the anterior papillary muscle containing part of the conducting system.

Figure 20-2 Cardiac Cycle Use Figure 20-2 to answer the following questions: -What volume is labeled "G" on the graph?

Cardiac muscle cells and skeletal muscle cells differ in a few ways. Which of the following is not one of them?

In-Text Figure Based Questions -Which ion's entry causes rapid depolarization? Which ion's entry causes the plateau? Which ion's exit causesrepolarization? (Figure 20-15)

The AV node delay is beneficial because