The semilunar valves prevent the backflow of blood into the atria when the ventricles are contracting.

The tricuspid valve is located between the:

Deoxygenated blood is returned to the right side of the heart by the:

A(n) ________ is a bulge, or weakened wall, of an artery.

Listing. List three differences between arteries, veins and capillaries (ex.- characteristics, function, what they carry, etc) (2 X’s each) Veins Arteries Capillaries

Cardiac muscle cells have a long _____ period so that rapid stimulation produces isolated rather than spasmic contractions.

Which valve guards the base of the aorta and opens when the ventricles are contracting:

Resistance is a force that

Which of the following hormones promotes sodium ion reabsorption by the kidney in order to increase blood pressure and blood volume:

Which of the following is true about the atrial reflex?