Exam 12: Cardiovascular System

Researchers have long attempted to find a substitute for red blood cells, specifically the ability to carry oxygen. Which of the following properties would be important for "artificial red blood cells"?

In a coronary bypass operation, a stent is placed within the blockage and the clogged area is compressed.

Which of the following is a characteristic of hemoglobin?

If you are tracing the path of blood from the right to the left side of the heart, you must mention the

Intrinsic control of heartbeat rate involves what mechanism(s)?

The electrical changes that occur in the heart during contraction are recordings termed

The alternating expansion and recoil of an arterial wall is termed a(n)

In humans, the superior vena cava

Which blood pressure is considered abnormally high for individuals who are under the age of 45?

Which phase of the ECG indicates ventricular excitation and contraction?

Early doctors did not understand that blood flowed in a circuit. Instead, they assumed that blood ebbed and flowed like a tide in the body. William Harvey was the first to demonstrate the circulation of blood and convince the medical community. Which of the following observations would be evidence that blood was pumped through the body or flowed in a circuit?

The blood vessel that provides oxygen to the heart tissue is the

Which of the following is correctly associated?

Sphincter muscles regulate the opening and closing of arterioles leading to capillary beds, directing the flow of blood to different areas of the body depending on the body's needs.

Which blood vessels carry blood away from the heart?

Venous return does not depend on

The reason red blood cells only live about 120 days is because red blood cells

Usually there is only one capillary bed between an artery and vein; an exception to this is the

Stem cells are

Which of these statements accurately describes the heart? Check all that apply.