Exam 12: The Cardiovascular System: the Heart

When the ventricles are relaxed, the ________ are loose and there is no resistance to the flow of blood from atrium to ventricle.

________ is a condition in which the heart rate is slower than normal.

The two heart reflexes directly respond to changes in

Figure 12-1 Major Internal Landmarks of the Heart Use Figure 12-1 to identify the labeled part. -Label L represents the

Blood returning directly from the systemic circulation enters the

The muscular ridges found on the internal surfaces of the ventricles are collectively called (the)

The ________ circuit carries blood to and from all parts of the body except the lungs.

According to the Frank-Starling principle, a more powerful contraction results in

According to the Frank-Starling principle, the cardiac output is directly related to (the)

During ventricular systole,

Figure 12-1 Major Internal Landmarks of the Heart Use Figure 12-1 to identify the labeled part. -Label D represents the

Figure 12-1 Major Internal Landmarks of the Heart Use Figure 12-1 to identify the labeled part. -Label Q represents the

Small tributaries from the branches of the coronary arteries form interconnections called

Some people justify their smoking habit by saying that smoking calms them down. Is this justification correct physiologically?

The wall between the atria is called the