Exam 11: The Cardiovascular System

The flaplike opening in the interatrial septum of the fetus through which blood is shunted directly from the right atrium to the left atrium is the ________.

Allergic contact dermatitis following skin contact with poison ivy would normally lead to ________.

Using Figure 12.1, identify the following: -A lymph node is indicated by ________.

Which of the following substances is NOT likely to trigger the immune response?

Troublesome small molecules or incomplete antigens that may mount an attack that is harmful rather than protective are called ________.

Lymph is largely composed of water that has escaped from ________.

Which of the following is often used to treat allergies?

Match the following: -These vessels have thicker walls and a heavier tunica media

The chordae tendineae anchor the semilunar valves to the walls of the ventricles.

Exchanges between blood and tissue cells occur in capillary beds.

The umbilical vein carries ________.

Which lymphoid tissues trap and remove bacteria entering the throat?

Match the following: -These vessels have thinner walls and transport oxygen-poor blood

Allergies, or hypersensitivities, are normal immune responses.

Capillaries are composed only of tunica intima.

Match the following: -Blood pressure in these vessels is low or even negative

Xenografts are ideal donor organs or tissues since they rarely cause rejection.

The flow of blood through a capillary bed is called ________.

An increased firing of the parasympathetic nervous system causes increased cardiac output.

Match the following: -Semilunar valves are forced open as pressure in the heart rises