WGU - D313 - Anatomy & Physiology 2 Practice Test Questions With Complete Solutions.Which structure contains lubricating fluid that helps the heart to expand and contract? Answer- Pericardial Cavity Which structure protects the heart? Answer- Pericardium Which artery gives rise to the right ulnar artery? Answer- Right Brachial Artery Which artery becomes the femoral artery one it leaves the body cavity? Answer- External Iliac Artery Which heart sound does the closing of the Bicuspid valve correspond to? Answer- Lub/S1 Which part of the cardiac cycle is represented by the QRS complex? Answer- Ventricular Systole What is the difference between the maximum and resting cardiac output (CO) called? Answer- Cardiac Reserve What is the normal resting heart rate (HR) of an adult? Answer- 60-110 bpm What sound is produced by the closing of the mitral and tricuspid valve? Answer- First Heart Sound Which blood cells lack granules? Answer- Monocytes and lymphocytes Which blood component contains hemoglobin? Answer- Erythrocyte Which cell contains the highest concentrations of iron? Answer- Erythrocyte Which element contributes to blood clotting? Answer- Prothrombin protein What is an elastic, flexible cartilage in the larynx? Answer- Epiglottic cartilage
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