12) 12) To auscultate the aortic semilunar valve, you would place your stethoscope in the A) second intercostal space to the left of the sternum B) fifth right intercostal space C) fifth intercostal...

12) 12) To auscultate the aortic semilunar valve, you would place your stethoscope in the A) second intercostal space to the left of the sternum B) fifth right intercostal space C) fifth intercostal space inferior to the left nipple D) second intercostal space to the right of the sternum 13) Foramen ovale 13) A) connects the two atria in the fetal heart B) is a connection between the pulmonary trunk and the aorta in the fetus C) is a condition in which the heart valves do not completely close D) is a shallow depression in the interventricular septum 14) The tricuspid valve is closed A) while the ventricle is in diastole B) by the movement of blood from atrium to ventricle C) when the ventricle is in systole D) while the atrium is contracting 15) During the period of ventricular filling 15) A) pressure in the heart is at its peak B) it is represented by the P wave on the ECG C) the atria remain in diastole D) blood flows passively through the atria and the open AV valves into the ventricles 16) The time of day most hazardous for heart attacks is 16) A) morning B) noontime C) evening D) during sleep 17) Select the correct statement about cardiac output. 17) A) If a semilunar valve were partially obstructed, the end systolic volume in the affected ventricle would be decreased. B) A slow heart rate increases end diastolic volume, stroke volume, and force of contraction. C) Decreased venous return will result in increased end diastolic volume. D) Stroke volume increases if end diastolic volume decreases 18) Isovolumetric contraction 18) . A) occurs immediately after the aortic and pulmonary valves close B) occurs only in people with heart valve defects C) refers to the short period during ventricular systole when the ventricles are completely closed chambers D) occurs while the AV valves are open 19) 19) The source of blood carried to capillaries in the myocardium would be the A) coronary sinus C) coronary veins B) fossa ovalis D) coronary arteries