HHP 3114 Exam 3 | Questions with Verified Answers

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HHP 3114 Exam 3 | Questions with Verified Answers Which of the following is not considered a function of the cardiovascular system a. secretion of hormones b. delivery of o2 and other nutrients c. removal of co2 and other metabolic waste d. thermoregulation, and maintaining acid-base balance e. overall fluid balance The primary function of the cardiovascular system is ensuring that there is adequate blood flow throughout the circulation to meet the metabolic demands of the tissue The circulation originating from the left side of the heart is the systemic circulation The circulation originating from the right side of the heart is the pulmonary circulation The major artery returning blood to the heart is the coronary artery The pumping chambers of the heart that deliver blood to the lungs and body tissues are called the Ventricles The portion of the heart that pumps blood to the body is called the left ventricle The heart receives its nervous control from both the sympathetic and parasympathetic nervous systems Deoxygenated blood is pumped from the right ventricles into the pulmonary arteries The normal "pacemaker" of the heart is the sinoatrial node The heart's main nutrient blood supply is provided via the right and left coronary arteries The T-wave represents repolarization of the ventricles The P-wave represents depolarization of the atria The QRS complex represents depolarization of the ventricles An electrocardiogram is a recording of the heart's electrical activity Sequence of events for a normal EKG SA node, AV node, bundle of His, Purkinje fibers Bradycardia is generally defined as resting heart rate below 60 bpm The cardiac cycle is the time between one systole to the next systole The volume of blood pumped by the heart per minute is referred to as cardiac output The volume of blood ejected from the heart with each contraction is called stroke volume Stroke volume equals end diastolic volume minus systolic volume What phase of the cardiac cycle does the diastolic pressure reflect? Relaxation The volume of blood in the ventricles at the end of ventricular filling is called end diastolic volume The most important variable that determines resistance to blood flow is the diameter of the vessel Skeletal muscles receive approximately ________% of the total cardia output under resting conditions, but they can receive as much as _____% of the cardia output during heavy endurance exercise 15; 80 The ratio of formed elements in the blood (red cells, white cells, platelets) to the total blood volume is Hematocrit

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