Circulatory System

The sac that surrounds and protects the heart?

Name part I: pericardium, mediastinum, septum, unknownum

Name part A. Options: Pulmonary artery, Pulmonary vein, Superior vena cava, Aorta

Name part M.

The relaxing/filling stage of the cardiac cycle?

Type of device that measures the electrical currents created by the SA and AV nodes? Options: AED, MRI, ECG, CAT Scan

Identify the layers of the heart from the most outer layer to the most inner layer.

Why are the walls of the left ventricle thicker than that of the right ventricle?

Normal blood pressure is...

Which of the following does NOT affect BP? Options: Blood volume, Stress, Blood viscosity, Blood temperature