Exam 15: Cardiovascular System

Central venous pressure is the pressure in the inferior vena cava at the central point of the abdomen.

Blood flow to the right side of the heart muscle decreases due to constriction of the _____, and decreased blood flow to the heart tissue can result in _____.

The pain of angina pectoris comes from a blockage in an artery that supplies the

The smaller branches of the coronary arteries have some anastomoses between vessels.

Which of the following layers of the heart and their functions are correctly matched?

The SA node relays nerve impulses into the AV bundle of the interventricular septum, and the AV node is responsible for the rhythmic contractions of the heart.

Heart rate in a fetus is about ____, in a newborn about _____, and in an adult about ___.

In the arterial disease atherosclerosis,

When venous pressure is too low, ____________ stimulate smooth muscles in the walls of veins to contract.

The normal pacemaker of the heart is the

Which type of blood vessel holds the greatest volume of blood?

Which of the following is most life threatening?

In mitral valve prolapse, the mitral valve

Osmotic pressure forces molecules in the blood out through capillary walls.

The right atrium receives blood directly from

The inner lining of the heart is the

The blood pressure in the large systemic arteries is greatest during

Which artery is incorrectly matched to its location?

Tim runs 5 to 8 miles a day. He has an enlarged heart and low heart rate and blood pressure. He most likely has

Lipid-soluble substances diffuse through channels in cell membranes of cells forming the capillary wall, whereas lipid-insoluble substances diffuse through most areas of the capillary cell membranes.