HEART VALVES AND CIRCULATION
What is the purpose of the atrioventricular (AV) valves?
What is to separate the atria from the ventricles?
What is the period of heart contraction called?
What is systole?
What is afterload?
What is the pressure or resistance against which the ventricles must pump to eject blood?
What is the first segment of the left coronary artery called?
What is the left main coronary artery?
What are baroreceptors responsible for detecting?
What are changes in blood pressure?
DOUBLE JEOPARDY!!!
What prevents backflow of blood from the aorta and pulmonary arteries into the ventricles?
What are the semilunar valves?
What is the period of heart relaxation called?
What is diastole?
What effect refers to a change in myocardial contractility?
What is the inotropic effect?
What artery is referred to as the "widow maker" when occluded?
What is the left anterior descending artery?
What do chemoreceptors detect and respond to?
What are changes in the concentration of hydrogen ions (pH), oxygen, and carbon dioxide in the blood?
What are the two main branches of the left coronary artery?
What are the left anterior descending (LAD) artery and the circumflex (Cx) artery?
What is cardiac output?
What is the amount of blood pumped into the aorta each minute by the left ventricle?
What effect refers to a change in the speed of impulse conduction through the heart?
What is the dromotropic effect?
DOUBLE JEOPARDY!!!
What does the right coronary artery (RCA) supply?
What is the right atrium, right ventricle, and inferior surface of the left ventricle?
What is the primary neurotransmitter involved in parasympathetic stimulation of the heart?
What is acetylcholine?
What is the role of the coronary veins?
What is to return deoxygenated blood from the heart muscle to the right atrium?
What is the term for the percentage of blood pumped out of a ventricle with each contraction?
What is ejection fraction?
What are the primary neurotransmitters involved in sympathetic stimulation of the heart?
What are norepinephrine and epinephrine?
What is angina pectoris?
What is chest discomfort caused by myocardial ischemia?
What is the term for a chronic disease characterized by abnormal thickening and hardening of arterial walls?
What is arteriosclerosis?
What is the significance of the "widow maker" artery?
What is its association with sudden cardiac arrest when occluded?
What is preload?
What is the force exerted by the walls of the ventricles at the end of diastole?
What is four
What is atherosclerosis?
What is a form of arteriosclerosis caused by a buildup of fat-like deposits in vessel walls?
HOW MANY CHAMBER DOES THE HEART HAVE
WHAT IS FOUR